Verification Method of Vibratory Apparatus
For
CIPA DC-X011-2024
Measurement and Description Method for Image Stabilization
Performance of Digital Cameras (Optical System),

Published in x, 2024

Published by
Camera & Imaging Products Association

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THIS DOCUMENT OR USE THEREOF.

Copyright © 2024 CIPA All Rights Reserved-1-

Contents
1.

Introduction .............................................................................................................................. - 3 -2.

Scope........................................................................................................................................ - 3 -3.

Overview of Verification Method ............................................................................................ - 3 -

4.

5.

6.

3-1

Basic Approach ................................................................................................................ - 3 -3-2

Loads Shaken by the Vibratory Apparatus ....................................................................... - 5 -3-3Documents, Data, Software and Charts Provided by CIPA ............................................. - 5 -3-4Disclaimer ........................................................................................................................ - 5 -3-5

Definition of Terms .......................................................................................................... - 5 -3-6Referenced Standards....................................................................................................... - 6 -Measurement I ......................................................................................................................... - 7 4-1

Preconditions.................................................................................................................... - 7 -4-2

Equipment and Environment for Measurement ............................................................... - 7 -4-3

Measurement Procedures ................................................................................................. - 8 -4-4

Judging Measurement Results ......................................................................................... - 9 -Measurement II ...................................................................................................................... - 11 5-1

Preconditions.................................................................................................................. - 11 -5-2

Equipment and Environment for Measurement ............................................................. - 11 -5-3

Settings of Camera to be Measured ............................................................................... - 15 -5-4

Measurement Procedures ............................................................................................... - 16 -5-5

Judging Measurement Results ....................................................................................... - 19 -Measurement III ..................................................................................................................... - 11 6-1

Preconditions.................................................................................................................. - 11 -6-2

Equipment and Environment for Measurement ............................................................. - 11 -6-3

Settings of Camera to be Measured ............................................................................... - 15 -6-4

Measurement Procedures ............................................................................................... - 16 -6-5

Judging Measurement Results ....................................................................................... - 19 --2-

Verification Method of Vibratory Apparatus
1. Introduction
This document specifies the method for verifying performance of the vibratory
apparatus used in measuring image stabilization performance in accordance with CIPA
Standard DC-011-2024 Measurement and Description Method for Image
Stabilization Performance of Digital Cameras (Optical System), as well as
measurement accuracy of intrinsic image degradation amount and total image degradation
amount (or measured handheld blur amount) as given in Section 4-2-8 Handheld Blur
Measurement Software in the above standard. (Hereinafter, CIPA Standard DC-0112024 Measurement and Description Method for Image Stabilization Performance ofDigital Cameras (Optical System) will be abbreviated to just CIPA Standard DC-0112024.)
As this document conforms with CIPA Standard DC-011-2024, it is has been written
assuming knowledge of the terms and measurement procedures for image stabilization
performance defined therein. Refer to the standard for further explanation on all terms
and measurement procedures for image stabilization performance not present in thisdocument.
2. Scope
This document specifies the method for verifying performance of the vibratory
apparatus used in measuring image stabilization performance in accordance with CIPA
Standard DC-011-2024, as well as measurement accuracy of intrinsic image degradation
amount and total image degradation amount (or measured handheld blur amount) as given
in Section 4-2-8 Handheld Blur Measurement Software in the above standard. It is notapplicable for any other measuring apparatuses or measuring procedures.
3. Overview of Verification Method
3-1 Basic Approach
Defined below are Measurement I, Measurement II, and Measurement III, three methods
for verifying performance of the vibratory apparatus used to measure image stabilization
performance in accordance with CIPA Standard DC-011-2024, as well as measurement
accuracy of intrinsic image degradation amount and total image degradation amount (ormeasured handheld blur amount) as given in Section 4-2-8 Handheld Blur
Measurement Software in the above standard.

-3-

Measurement I:
Evaluates basic performance of the vibratory apparatus based on sine waves of differing
frequencies and amplitudes.
This method measures the amplitude and phase characteristics of vibrations from theapparatus. For amplitude characteristics, it evaluates how well the vibration amplitude of
the input waveform matches that produced by the vibratory apparatus. For phasecharacteristics, it evaluates the vibration phase lag at a specified frequency.
Measurement II:
Evaluates how the vibratory apparatus performs with complex vibrations, such as vibration
waveforms, at the center of the image, using a test waveform that mimics camera vibration fromcamera shake.
This method measures, at the center of the image, the image degradation amount for images captured
when the image stabilization function is OFF with a camera shaken by the vibratory apparatus. It
evaluates how closely the measured handheld blur amount as calculated from the image degradation
amount matches the reference handheld blur amount as calculated from the average vibration angle ofthe test waveform.
Measurement III:
Evaluates how the vibratory apparatus performs at the corner of the image (position at image height60%) using a sine wave similar to the amplitude of camera vibration caused by a camera shakecomponent rotating about the optical axis.
This method measures, at the corner of the image (position at image height 60%), the image
degradation amount for images captured when the image stabilization function is OFF with a camera
shaken by the vibratory apparatus. It evaluates how closely the measured handheld blur amount ascalculated from the image degradation amount matches the reference handheld blur amount ascalculated from the average vibration angle of the test waveform.

Evaluations for vibratory apparatuses used to measure image stabilization in thestandard must meet the performance marks set for Measurement I, Measurement II, andMeasurement III.
Also, evaluations for measurement accuracy of intrinsic image degradation amounts andtotal image degradation amounts (or measured handheld blur amount) as given in CIPA
Standard DC-011-2024 Section 4-2-8 Handheld Blur Measurement Software mustmeet the performance marks set for Measurement II and Measurement III.

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3-2 Loads Shaken by the Vibratory Apparatus
Mechanical components and motor specifications for the vibratory apparatus may vary significantly
depending on the mass (load) of the object to be shaken. There will likely be a great difference in costand development requirements for vibratory apparatuses made to accommodate wide load

ranges and those for more limited load ranges. There is no guarantee that
accommodating wide load ranges will meet the purpose or interests of themeasurer. Therefore, it is assumed that a specific load will be set for each
vibratory apparatus, and this verification method is to take the load range into account forevaluations.

3-3 Documents, Data, Software and Charts Provided by CIPA
CIPA will provide the following documents, data, software and charts for verification:
1)

This document

2)

Two (2) test waveforms

3)

Two (2) average vibration angles

4)

Image clipping software with manual and instructions for use

5)

Handheld Blur Measurement Software (FindsBlur) with manual and instructions for use

6)

CIPA Handheld Blur Measurement Chart (for additional fee)

3-4 Disclaimer
All claims and actions taken against vibratory apparatus performance or specifications are the sole
responsibility of the supplier or measurer, even for apparatuses designed and manufactured to satisfy
predetermined performance with this verification method.

3-5 Definition of Terms
Definitions of terms used in this document are described below. Terms defined in CIPA Standard DC011-2024 are not described in this document. Please refer to the standard for definitions.
3-5-1 Loads
Load refers to the total mass of the camera body, lenses and other attachments shaken by the vibratory
apparatus. If, for example, the load range is 300 g to 1 kg, this means that the vibratory apparatus canvibrate objects with a total mass between 300 g and 1 kg.
3-5-2 Test Waveforms TWB-H and TWB-L
The test waveforms used in Measurement II. TWB-H and TWB-L are two test waveforms made to-5-resemble the vibration from camera shake. Which is used depends upon the load range shaken by thevibratory apparatus.
The TWB-H and TWB-L files are in text format, named TWB-H-xxx.txt and TWB-L-xxx.txt,
respectively. Test waveforms are provided as angle data changing in the time direction for a length of
32 seconds. Data sampling frequency is 500Hz. The ‘xxx’ in the test waveform file names is a 3-digit
number giving the waveform version. If a test waveform has been revised, version differences aremanaged with these numbers.
3-5-3 Average Vibration Angles of Composed Yaw/Pitch Component
These are the average values for the vibration angles of the composed yaw and pitch components ateach shutter speed when the camera is shaken using the test waveforms TWB-H and TWB-L.
Average vibration angle data files are in text format, with the file corresponding to TWB-H named
TAVA-1-xxx.txt and that corresponding to TWB-L named TAVA-2-xxx.txt.
Again, the ‘xxx’ in the file names is a 3-digit number giving the version number. The 3 digits areused to manage the files, corresponding with the test waveform revisions.
3-5-4 Conversion Factor (fr)
The number used to calculate reference image degradation amount with Measurement II.

3-6 Referenced Standards
3-6-1 Referenced Standards
CIPA DCG-002 Specification Guideline for Digital Cameras

CIPA DCG-005 Measurement and Description Methods for Weight and Dimensions ofDigital Cameras

CIPA Standard DC-011-2024 Measurement and Description Method for Image Stabilization
Performance of Digital Cameras (Optical System)

3-6-2 Response to Revision of Reference Standards
If specifications referred to by this standard are revised, response will be as follows:

For specifications and guidelines managed by CIPA, revised editions shall be followed.

For other specifications, this standard shall be followed in principle until revised.

-6-

4. Measurement I
4-1 Preconditions
Vibratory apparatus evaluations with Measurement I are to follow Section 4-2
Equipment and Environment for Measurement and Section 4-3 Measurement
Procedures.
The number of measurements taken is left up to the discretion of the measurer, but themeasurer is not permitted to selectively choose which measurements to use.
An overview of the measurement method is shown below in Figure 4-1.

Figure 4-1: Overview of Measurement I

4-2 Equipment and Environment for Measurement
4-2-1 Sine Waves and Combinations Used in Evaluation
Measurement I uses sine waves with the frequencies and amplitudes shown in Table 42-1a to evaluate the amplitude and phase characteristics of the vibratory apparatus. During
the evaluation, the load is shaken in the yaw, pitch, and roll directions simultaneously in accordancewith the instructions in Table 4-2-1b and Table 4-2-1c. Table 4-2-1b shows the combination of
frequencies and amplitude for evaluating amplitude characteristics, and Table 4-2-1c shows that forevaluating phase characteristics.

-7-

Table 4-2-1a: Combinations of sine wave frequency and amplitude used in
evaluations

a
b
c
d
e

Frequency Amplitude Angular Velocity(deg/sec)(deg: ±)
(Hz)
1.26
2
0.1
6.28
2
0.5
1
1
6.28
5
0.2
6.28
10
0.1
6.28

Table 4-2-1b: Combination of waveforms (for amplitude characteristic evaluation)
Yaw
Pitch
Roll

Pattern 1ace

Pattern 2bdaPattern 3cebPattern 4dacPattern 5ebdTable 4-2-1c: Yaw and pitch combinations (for phase characteristic evaluation)
Yaw
Pitch
Roll

Pattern 6cd-Pattern 7dc-Pattern 8cdPattern 9 Pattern 10 Pattern 11
d
c
d
c
d
c

4-2-2 Measuring Devices
This specification does not specify the device to be used for measuring the vibrational
state of the vibratory apparatus. Therefore, the measurer is to use the optimal means
according to his measuring environment, whether it be angle sensors, angular velocity
sensors (gyroscopes), rotary encoders, laser displacement sensors or other devices. A
combination of multiple devices is also acceptable. However, the measuring device usedshould be accurate enough to leave no doubt of the measurement results.
4-2-3 Temperature and humidity
The temperature and humidity shall be 23°C ± 2°C and 30 to 70%. Measurement may be

performed under other conditions as long as there is no room for doubt.
4-3 Measurement Procedures
Successively mount objects equivalent to the maximum and minimum weights of thetarget load range to the vibratory apparatus and shake them in patterns 1-11 as given in-8-Section 4-2-1 Sine Waves and Combinations Used in Evaluation. Next, measure thevibrational states using a device given in Section 4-2-2 Measuring Devices. If any
sensors or other devices are mounted to the vibratory apparatus for measurement, include
their mass to the load.
4-4 Judging Measurement Results
If the procedure given in Section 4-3 Measurement Procedures is followed with
objects equivalent to the maximum and minimum weights of the target load range
mounted to the vibratory apparatus and shaken, measurements meeting the following
performance guidelines are deemed to have satisfied the Measurement I evaluation:


There is less than ±5% difference between the measured amplitude values andthat of the input sine wave for all combinations for patterns 1-5. (See Figure 44a)

The phase difference in the respective waveform measurements is 90 degrees orless for the combinations of patterns 6-11. (See Figure 4-4b)

Measured vibrationfrom vibratory apparatus

Amplitude of input sine wave

Difference in amplitude values
Amplitude of measured results(Vibration amplitude of vibratory apparatus)
Input sine wave

Figure 4-4a: Illustration of amplitude differences

-9-

Yaw
OR
Pitch
Measured vibrationfrom vibratory apparatus

Pitch
OR
Yaw
Phase difference
Figure 4-4b: Illustration of phase differences- 10 -

5. Measurement II
5-1 Preconditions
The evaluation of the vibratory apparatus in Measurement II shall be in accordance with Section 5-

2 Equipment and Environment for Measurement, Section 5-3 Settings of Camera to be
Measured and Section 5-4 Measurement Procedures. The number of measurements taken isleft to the discretion of the measurer, but all measurement results shall be used without selecting only
those that are desirable.
Figure 5-1 provides an overview of the measurement method.
PC for handheld blur measurement

Release operation

Vibratory apparatus
Chart

Variable brightness

Vibration waveform

Figure 5-1: Overview of Measurement II and Measurement III
Measurement II is also used when verifying measurement accuracy of intrinsic image
degradation amount and total image degradation amount (or measured handheld bluramount) as given in CIPA Standard DC-011-2024 Section 4-2-8 Handheld Blur
Measurement Software. Measurements are to follow Section 5-2 Equipment andEnvironment for Measurement and Section 5-3 Settings of Camera to be Measured.
The number of measurements taken is left up to the discretion of the measurer, but themeasurer is not permitted to selectively choose which measurements to use.
5-2 Equipment and Environment for Measurement
Other than the details given below, measuring equipment and environment are to comply- 11 -

with the provisions of CIPA Standard DC-011-2024 Section 4-2 Equipment andEnvironment for Measurement.
5-2-1 Handheld Blur Measurement Chart
CIPA handheld blur measurement chart shall be used when performing Measurement II.
5-2-2 Mounting of Camera to be Measured on Vibratory Apparatus
When mounting a camera to be measured on a vibratory apparatus, vibration of thevibratory apparatus and that of the camera mounted on the vibratory apparatus have tomatch.
When measuring a camera with a long-barrel lens, such as is found on high-powered
zoom lenses, vibrations of the camera body and lens may not match. This is because theexcitation induces strain in the lens, which prevents the applied vibration from being
correctly transmitted to the lens. Thus, when measuring a camera with a long-barrel lens,
fix not only the camera body but also the lens to the vibratory apparatus, or take othermeasures to ensure that the lens and camera body vibrations match.
The vibration waveforms adopted in this standard are vibrations that rotate on the rotational axes ofyaw, pitch, and roll. Therefore, the positional relationship between the center of rotation of thevibratory apparatus and the optical axis of the camera to be measured at the time of mounting affects
the vibration measurement results.
Therefore, to ensure measurement condition alignment, preferably the center of rotation of thevibration table and the optical axis of the lens are aligned in the horizontal and vertical directions in
the plane orthogonal to the optical axis.

5-2-3 Test Waveforms TWB-H and TWB-L and Loads during Evaluation
Measurement II is to be taken using either one of test waveform TWB-H or TWB-L orboth waveforms. The yaw and pitch vibration waveforms of test waveforms TWB-H and TWB-L
are illustrated in Figure 5-2-3a, and the average vibration angles of the composed yaw and pitch
components are illustrated in Figure 5-2-3b.

The combinations for the test waveforms and loads in accordance with the load ranges
for the vibratory apparatus are given in Table 5-2-3a and Figure 5-2-3c.
Each test waveform uses the biaxial components of yaw and pitch, and the yaw and pitch
components are excited simultaneously. Refer to Figure 6-3a in CIPA Standard DC-011-2024

for handheld blur in the yaw and pitch directions.
Further, vibration waveforms can be revised as necessary to reflect changes in camera
shape, how pictures are taken, and the associated development of image stabilization- 12 -

technology. Test waveforms can also be revised along with such changes.

The test waveform

The test waveform

acquisition method will beacquisition method will be

described separately.

described separately.

Figure 5-2-3a: Yaw and pitch vibration waveforms of test waveforms TWB-H (left) and TWB-L(right)Figure 5-2-3b: Average vibration angles of composed yaw and pitch components of test waveforms- 13 -

Table 5-2-3a: Test waveform and load combinations
Case
A
B
C
D
E
F

Vibratory Apparatus Load Range≥600 g400 - 600 g< 400 gMax-min
Max
Min
Max
Min
Max-minMax
Min
Max-min

TWB-L
－
－
－
Max load
Max load
Max load

Test Waveform and Load Used
TWB-H
TWB-L
Max load－
Max load
600 g
Max load
600 g
Max load－
Max load－－－

Load (total mass)
Case A

H

H

600 g

Case B

Case CH

H

L (600 g)

L (600 g)

Case D

L/H
Case E

L/H
Case F

400 g

L
Vibratory apparatus
load range
H: Using test waveform TWB-H ( )L: Using test waveform TWB-L ( )L/H: Using both TWB-H and TWB-L ()
L (600 g) : Using waveform TWB-L with 600 g load ()

Figure 5-2-3c: Test waveform and load combinations
5-2-4 Shooting Distance
The shooting distance should be such that the range shown by the lines for each aspect ratio in Figure
4-2-1a of CIPA Standard DC-011-2024 can be shot to approximately fill the whole picture frame. Thisdistance is about 20 times the 35mm film equivalent focal length.
5-2-5 Handheld Blur Measurement Software
The intrinsic image degradation amounts and measured image degradation amounts forimages of the CIPA handheld blur measurement chart taken according to Section 5-4
Measurement Procedures are to be quantified using FindsBlur, the handheld blurmeasurement software provided by the CIPA.

- 14 -TWB-H
Min load－－－－－However, the handheld blur measurement software is specified to calculate the image degradation
amounts at the white and black edges near the center of the image. Therefore, as a pre-processing step,
it is necessary to clip the captured image, centering the clips about the areas subject to image
degradation amount calculation. Specifically, with use of the provided image clipping software,
portions of the image of the CIPA handheld blur measurement chart corresponding to the center andfour positions in diagonal directions at image height 60% are clipped, and these partial images are
stored in five different folders. This image clipping process may be performed using in-house software.
The image degradation amounts are then calculated by the handheld blur measurement software using
the images in each folder obtained by clipping partial images at the center.

Note however that the camera settings or measurement environment may prevent you
from obtaining appropriate measurements even using this software. If there are any doubts
regarding the results of a measurement, review the camera settings and measurement
environment before re-measuring or taking other such measures.
5-2-6 Loads
Referring to the load ranges given in Table 5-2-3a and Figure 5-2-3c, shall mount an
object of equivalent weight to the load on the vibratory apparatus before measuring. The
total mass of the camera as mounted on the vibratory apparatus shall be included in theload.
5-3 Settings of Camera to be Measured
Other than the details given below, settings for the camera to be measured are to comply
with the provisions of CIPA Standard DC-011-2024 Section 4-3 Settings of Camera to
be Measured.
5-3-1 Image Stabilization Mode
Image stabilization is to be set to OFF.
5-3-2 Image Quality Mode (Compression Ratio)
Set the camera to its highest resolution mode (with the lowest compression ratio).
5-3-3 Image Quality Mode (The Number of Recording Pixels)
Set the camera to be measured to its highest number of recording pixels. Do not use
settings which exceed the effective number of pixels of the image sensor due to pixel
interpolation, image processing or other effects.

- 15 -

5-3-4 Focal Length Settings for the Camera to be Measured
Set to a 35mm film equivalent of approximately 100 mm.
5-3-5 Aspect Ratio
There is no specific set aspect ratio, but pixel interpolation, image processing and othereffects which change aspect ratio are prohibited.
5-4 Measurement Procedures
5-4-1 Calculating Conversion Factor (fr)Pre-calculate the conversion factor (fr) for calculating reference image degradation
amount in step 3 of Section 5-4-2 Measuring Image Degradation Amount Based on
Live Shooting from the shooting conditions. The conversion factor (fr) used here is a value
equivalent to the 35mm film equivalent focal length f used to calculate the yaw/pitch theoreticalhandheld blur amounts as given in step 2 of Section 4-5-1 Calculation of Basic Values Required to
Calculate Image Stabilization Performance of CIPA Standard DC-011-2024. The values needed

to calculate the conversion factor are given as (a)-(e) below. The calculation method isshown in Figure 5-4-1.
Values needed to calculate the conversion factor (fr)
Shooting distance (m, distance from CIPA handheld blur measurement chart torotation axis of vibratory apparatus)...(a)
Chart standard length for captured image (pixels)...(b)
Width for captured image (pixels)...(c)Height for captured image (pixels)
Standard CIPA handheld blur measurement chart length (= 288 mm)...(d)...(e)- 16 -

CIPA Handheld blur Measurement Chart
Camera to be measured(a) Shooting distance(m, distance from chart to rotation axis of vibratory apparatus)(d) Image height [pixels](b) Chart standard
length [pixels]

Position at image height 60%(e) Standard CIPA handheld blur measurement chart length(Actual chart length ＝ 288ｍｍ）

Actual chart length 432mm(c) Image length [pixels]

Conversion Factor (fr) = Shooting Distance (a)[m] x

𝐶𝐶ℎ𝑎𝑎𝑎𝑎𝑎𝑎 𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠 𝑙𝑙𝑙𝑙𝑙𝑙𝑙𝑙𝑙𝑙 ℎ (𝑏𝑏 )[𝑝𝑝𝑝𝑝 𝑥𝑥𝑥𝑥𝑥𝑥𝑥𝑥 ]𝐶𝐶ℎ𝑎𝑎𝑎𝑎𝑎𝑎 𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠 𝑙𝑙𝑙𝑙𝑙𝑙𝑙𝑙𝑙𝑙 ℎ (𝑒𝑒)[𝑚𝑚𝑚𝑚 ]x√24 2 +362 [𝑚𝑚𝑚𝑚 ]�𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼 𝑤𝑤𝑤𝑤𝑤𝑤𝑤𝑤 ℎ (𝑐𝑐)2 +𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼 ℎ𝑒𝑒𝑒𝑒𝑒𝑒 ℎ𝑡𝑡 (𝑑𝑑)2 [𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝 ]Figure 5-4-1: Method for calculating conversion factor (fr)

- 17 -x 106

5-4-2 Measuring Image Degradation Amount Based on Live Shooting
As stated in Section 5-3 Settings of Camera to be Measured, set image stabilization to
OFF on the camera to be measured. At each of the test waveform and load combinationsin Section 5-2-3 Test Waveforms TWB-H and TWB-L and Loads during Evaluation,
the camera shall be shaken using the vibratory apparatus and how close the measured
handheld blur amount is to the reference handheld blur amount shall be measured. The
measurement position on the CIPA handheld blur measurement chart is one white and black edge
portion positioned at the center. The shutter speeds of the camera to be measured are 1/30,

1/15, 1/8 and 1/4 (seconds). The specific procedure is outlined below:

Measurement position (one location)

Figure 5-4-2: Measurement position (one location at the center) of Measurement II1) Measure the intrinsic image degradation amount for the camera following theprocedure outlined in Section 4-4-1 Measurement of Intrinsic Image
Degradation Amount in CIPA Standard DC-011-2024. At this time, the shutter
speed of the camera to be measured is to be one of the four given above.
2) Following the procedure given in Section 4-4-2 Measurement of Total Image
Degradation Amount (in the Cases of Section 4-2-6 Selection Criteria I and II) in
CIPA Standard DC-011-2024, set image stabilization on the camera to be measured
to OFF and shake it with either test waveform TWB-H or TWB-L. From here,measure the measured image degradation amount. The shutter speed of the camera
to be measured is the shutter speed used in step 1 above and at least 200 images areto be captured. While there is no specified upper limit for number of images taken,
all images shall be used without selecting only those that are desirable.
3) Calculate the reference image degradation amount using the intrinsic image
degradation amount measured in step 1 and the test waveform average vibration
angle used in vibration in step 2. The calculation method of the reference image- 18 -

degradation amount shall be in accordance with step 3 of Section 4-5-1 Calculationof Basic Values Required to Calculate Image Stabilization Performance in
CIPA Standard DC-011-2024. If calculating theoretical handheld blur amount (μm),
use the conversion factor (fr) calculated in Section 5-4-1 Calculating Conversion
Factor (fr) instead of the 35mm film equivalent focal length f.
4) With the method explained in Section 4-5-2 Method of Converting Intrinsic
image degradation amount and Measured Image Degradation Amount into 35mm
Film Equivalent Values of CIPA Standard DC-011-2024, convert the measured
image degradation amount measured in step 2 to a 35mm film equivalent image
degradation amount.
5) Using the methods explained in steps 5 and 6 of Section 4-5-1 Calculation of Basic
Values Required to Calculate Image Stabilization Performance of CIPA
Standard DC-011-2024, calculate the reference handheld blur amount and measured
handheld blur amount from the reference image degradation amount and measured
image degradation amount as calculated in steps 3 and 4, respectively.
Change the shutter speed of the camera to be measured and repeat steps 1 through 5
above.
5-5 Judging Measurement Results
Measurement results from Section 5-4-2 Measuring Image Degradation Amount
Based on Live Shooting at each of the test waveform and load combinations indicatedin Section 5-2-3 Test Waveforms TWB-H and TWB-L and Loads during Evaluation
are deemed to have satisfied the Measurement II evaluation if they satisfy the following
performance requirement:● At the center of the CIPA handheld blur measurement chart, the difference between the measured
handheld blur amount and reference handheld blur amount, obtained from the measurements in
Section 5-4-2, is ±10% or less of the reference handheld blur amount at shutter speeds of 1/30,
1/15, 1/8, and 1/4 (seconds) on the camera to be measured.
The corners of the image at 60% are not judged.

If there is bias in shot timing, the values of measured handheld blur amount will varyregardless of vibratory apparatus performance. As such, when the difference between
measured handheld blur amount and reference handheld blur amount is more than 10%- 19 -

even though there are not any deficiencies in the vibratory apparatus, settings on thecamera to be measured, or conversion factor calculations, etc., check that there is no bias
in shot timing and re-measure.

- 20 -

6. Measurement III
6-1 Preconditions
The evaluation of the vibratory apparatus in Measurement III shall be in accordance with Section 62 Equipment and Environment for Measurement, Section 6-3 Settings of Camera to be Measured,and Section 6-4 Measurement Procedures. The number of measurements taken is left to thediscretion of the measurer, but all measurement results shall be used without selecting only those thatare desirable.
Figure 5-1 provides an overview of the measurement method.

6-2 Equipment and Environment for Measurement
The equipment and environment for measurement, excluding the details below, shall conform to the
CIPA Standard DC-011-2024 Section 4-2 Equipment and Environment for Measurement.
6-2-1 Handheld Blur Measurement Chart
The handheld blur measurement chart shall be in accordance with Section 5-2-1 Handheld Blur
Measurement Chart.
6-2-2 Mounting of Camera to be Measured on Vibratory Apparatus
The mounting of the camera shall be in accordance with Section 5-2-2 Mounting of Camera to be
Measured on Vibratory Apparatus.
6-2-3 Test Waveforms (Sine Waves) and Loads during Evaluation
For Measurement III, the test waveforms are sine waves about the optical axis. The combination of
frequencies and amplitudes are shown in Table 6-2-3.
Table 6-2-3: Combinations of frequencies and amplitudes of sine waves used in Measurement III

Waveform

Frequency[Hz]

Amplitude of sine
wave excited byvibration table ± W
[deg]

P1

1

± 0.5

P2

1

± 0.2

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Theoretical handheld blur amount [μm]= 2 x Lr x tanW

226.5 (with conversion factor Lr [mm]＝12.980)90.6 (with conversion factor Lr [mm]＝12.980)6-2-4 Shooting Distance
The shooting distance shall be in accordance with Section 5-2-4 Shooting Distance.
6-2-5 Handheld Blur Measurement Software
The handheld blur measurement software shall be in accordance with Section 5-2-5 Handheld Blur
Measurement Software.
However, the handheld blur measurement software is specified to calculate the image degradation
amounts at the white and black edges near the center of the image. Therefore, as a pre-processing step,
it is necessary to clip the captured image, centering the clips about the areas subject to image
degradation amount calculation. Specifically, with use of the provided image clipping software,
portions of the image of the CIPA handheld blur measurement chart corresponding to the center andfour positions in diagonal directions at image height 60% are clipped, and these partial images are
stored in five different folders. This image clipping process may be performed using in-house software.
The image degradation amounts are then calculated by the handheld blur measurement software using
the images in each folder obtained by clipping partial images at four positions at image height 60%.
6-2-6 Loads
The test weight shall be the upper limit load supported by the vibratory apparatus. The total of thecamera to be measured mounted on the vibratory apparatus and the weight to be added shall be
adjusted so that it reaches the upper limit load.

6-3 Settings of Camera to be Measured
The settings shall be in accordance with Section 5-3 Settings of Camera to be Measured.

6-4 Measurement Procedures
6-4-1 Calculating Conversion Factor (Lr)Pre-calculate the conversion factor (Lr) for calculating the reference image degradation amount instep 3 of Section 6-4-2 Measuring Image Degradation Amount Based on Live Shooting from theshooting conditions. The conversion factor (Lr) used here is a value equivalent to the 35mm film
equivalent distance L, from the center of the image to the measurement point, used to calculate theroll theoretical handheld blur amount as given in step 2 of Section 4-5-1 Calculation of Basic Values
Required to Calculate Image Stabilization Performance of CIPA Standard DC-011-2024. Thisdistance L is the height of the position at image height 60%. The shooting distance shall be adjusted
so that the distance L is within 60 ± 3% during shooting.
The values required to calculate the conversion factor (Lr) are (c) through (h) below, and thecalculation method is shown in Figure 6-4-1.

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Values Required to Calculate Conversion Factor (Lr)
Width for captured image [pixels]...(c)Height for captured image [pixels]
Chart standard length for captured image [pixels]...(d)...(g)

Actual chart length = 259.6mm(d) Image height [pixels](g) Chart standard length [pixels]

Actual chart length
288mm

Position at image height 60%

Actual chart length 432mm(c) Image length [pixels]

Conversion factor (Lr) [mm] = Chart standard length (g) [pixels] x

24２+36２[mm]Image width (c)2 + Image height (d)2 [pixels]

Figure 6-4-1: Calculation method of conversion factor (Lr)

6-4-2 Measuring Image Degradation Amount Based on Live Shooting
As stated in Section 6-3 Settings of Camera to be Measured, with image stabilization set to OFF
on the camera to be measured, the camera shall be shaken using the vibratory apparatus and how closethe measured handheld blur amount is to the reference handheld blur amount shall be measured. The
measurement positions on the CIPA handheld blur measurement chart are four white and black edge
portions positioned at the corners on diagonal lines at image height 60%. The shutter speeds of thecamera to be measured should be an integer multiple of 1 [second] to ensure proper exposure. The
specific procedure is outlined below:- 23 -

Measurement positions (four locations)Figure 6-4-2: Measurement positions (four locations around) of Measurement III

1) Measure the intrinsic image degradation amount of the camera to be measured according to theprocedure described in CIPA Standard DC-011-2024 Section 4-4-1 Measurement of Intrinsic
Image Degradation Amount. The shutter speeds of the camera to be measured should be an
integer multiple of 1 [second] to ensure proper exposure.
2) Follow the procedure described in Section 4-4-2 Measurement of Total Image Degradation
Amount (in the case of Section 4-2-6 Selection Criteria I and II) in CIPA Standard DC-0112024, and shake the camera to be measured (but with the image stabilization function OFF) withthe two types of waveforms described in Section 6-2-3 Test Waveforms to measure themeasured image degradation amount. The shutter speed of the camera to be measured is the
shutter speed used in step 1. At least 100 images are to be captured. While there is no specified
upper limit for number of images taken, all images shall be used without selecting only thosethat are desirable.
3) Calculate the reference image degradation amount from the intrinsic image degradation amountmeasured in step 1 and the angle of the amplitude of the test waveform used in vibration in step
2 (equivalent to the average vibration angle). The calculation method of the reference image
degradation amount shall be in accordance with step 3 of Section 4-5-1 Calculation of Basic
Values Required to Calculate Image Stabilization Performance in CIPA Standard DC-0112024. However, when calculating the roll theoretical handheld blur amount (μm), use theconversion factor (Lr) calculated in Section 6-4-1 Calculating Conversion Factor (Lr) insteadof the 35mm film equivalent distance L from the center of the image to the measurement point.
4) With the method described in Section 4-5-2 Method of Converting Intrinsic image
degradation amount and Measured Image Degradation Amount into 35mm Film Equivalent
Values of CIPA Standard DC-011-2024, convert the measured image degradation amountmeasured in step 2 to a 35mm film equivalent image degradation amount.

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5) From the reference image degradation amount and measured image degradation amountcalculated in steps 3 and 4, calculate the reference handheld blur amount and measured handheld
blur amount with the method described in steps 5 and 6 of Section 4-5-1 Calculation of Basic
Values Required to Calculate Image Stabilization Performance of CIPA Standard DC-0112024.
Repeat the above steps 1 through 5 above with the different waveforms described in Section 6-2-3
Test Waveforms.

6-5 Judging Measurement Results
Measurement results from Section 6-4-2 Measuring Image Degradation Amount Based on Live
Shooting are deemed to have satisfied the Measurement III evaluation if they satisfy the performancerequirement described below.
Obtain the measured handheld blur amount corrected in accordance with Table 6-5-1 Correction
method of measured value of Measurement III. The reason for correction is that the vibration
waveform is a sine wave, not a roll waveform, and the calculated image degradation amount is shifted.
The correction compensates for this shift.
Table 6-5-1: Correction method of measured value of Measurement III

Correction factor
Correction
Modification
factorA
withfactor B
MeasuredCorrected measured
handheld blur amount
handheld blur respect to limit unique tosingle sine[μm] = N x A x B
value N [μm] of image
wave vibration
degradation
amountcalculation
softwareP(1)P(1) x 0.8 x 1.05
0.8
1.05
P(2)
P(2) x 0.8 x 1.05
● With each of the two types of waveforms described in Section 6-2-3 Test Waveforms, when the
shutter speed of the camera to be tested is an integer multiple of 1 [second] with proper exposure
at four white and black edge areas positioned on diagonal lines at image height 60% of the CIPA
handheld blur measurement chart, (1) and (2) are to be satisfied.
(1) The difference between the corrected measured handheld blur amount and reference handheld
blur amount, obtained from the measurements in Section 6-4-2, is ±50% or less of the reference- 25 -

handheld blur amount at each of the four locations.
(2) Additionally, the difference between the average measured value at the four locations and thereference handheld blur amount is ±10% or less of the reference handheld blur amount.
Measurement results are not judged at the center. The reason is that, in principle, roll blur is notpresent at the center and cannot be evaluated.
If there is bias in shot timing, the values of measured handheld blur amount will vary regardless ofvibratory apparatus performance. As such, when the evaluation is not satisfied even though there are
not any deficiencies in the vibratory apparatus, settings on the camera to be measured, or conversion
factor (Lr) calculations, etc., check that there is no bias in shot timing and re-measure.

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Any and all standards and guidelines published by CIPA have been set forth without
examining any possibility of infringement or violation of Intellectual Property Rights(patent right, utility model right, trademark right, design right, copyright and any otherrights or legal interests of the same kind).
In no event shall CIPA be liable in terms of Intellectual Property Rights for the contents ofsuch standards and guidelines.

Verification Method of Vibratory Apparatus
Published in X, 2024
Published by Camera & Imaging Products Association
JCII BLDG., 25, Ichiban-cho, Chiyoda-ku, Tokyo, 102-0082 Japan
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