NOKTON 40mm F1.2 Aspherical
RF-mount
INSTRUCTION MANUALCOSINA CO., LTD.

Jan 2024, Ver 1.0

Thank you for purchasing a Voigtländer product. Voigtländer RF-mount series is amanual focus interchangeable lens that can be directly connected to the Canon
RF mount without an adapter. The optical system is optimized for the image
sensor of mirrorless cameras using the Canon RF mount. The lens mount isequipped with electronic contacts that establish communications between
the lens and camera body.In addition to Exif information and in-body image
stabilization (3-axis), the lens has three types of focusing support functions:[1] Focusing with the magnification function,[2] Focus peaking function,[3] Focusing with focus guide function.

Features of the RF-mount series■ Designed exclusively for Canon RF mount■ Data communications with the body through electronic contacts■ Highly durable all-metal lens barrel■ Manual focus for accurate fine-focusing

Tips for lens care and safety
These tips are to protect the user from injury or damaging the lens.

WARNINGCAUTIONWARNINGCAUTIONCAUTION

If the user ignores this warning and uses the equipmentincorrectly, serious injuries and even death may be the result.
If the user ignores this caution sign it might result in injuries
and damage the equipment.
Never look directly at the sun with a telephoto lens as thiscan damage your eyes.
Keep the lens, camera and accessories out of the reach ofchildren.
Store the lens away from direct sunlight and always store
the lens with lens-cap on. Failure to do so may create a fire
hazard.

Precautions for use
Never touch the lens surface. In case it is dirty or dusty use commercially availablelens cleaners or an appropriate lens cleaning cloth.

Please check the Cosina website for the latest information anddetails.

www.cosina.co.jp/voigtlander/en/Description of Parts① Lens Hood
② Filter Ring
③ Aperture Control Ring
④ Aperture Ring
⑤ Focus Ring
⑥ Distance Scale⑦ Depth of Field Scale⑧ Mount Index⑨ Mount⑩ Aperture Index⑪ Aperture Scale⑫ Depth of Field Ring
⑬ Distance Index①②③④⑤⑩⑪⑥⑦⑧⑨⑫⑬

● How to attach/detach the lensPlease refer to the instruction manual for your camera for how to attach/detachthe lens.
* Please make sure to set the power of the camera to “OFF”.

Please hold the Depth of Field Scale ⑫ to attach/detach the lens. If you attach/detach the lens while holding other parts of the lens barrel it may damage thelens.

● Attaching Lens Hood

Screw the Lens Hood ① to the threads on the lens.

● Attaching Filter

1. Screw the filter (Ø58mm) to the front of the lens.
2. Screw the Lens Hood ① into the thread of the filter when using the LensHood① together with the filter.
* Do not screw the filter into the thread of the Lens Hood ① . This may cause vignetting.

● Selective Aperture Control System

You can choose two modes – with or without Click Stops - on the Aperture
Control Ring.
1. Push the Aperture Control Ring ③ towards the Aperture Ring ④ .
2. Turn the Aperture Control Ring ③ 180 degrees.
3. Make sure to align the 2 indexes ⑩ and ⑬ .
* If the white mark on the Aperture Control Ring ③ is in line with the indexes, the lens is in Click Stopmode. The yellow mark indicates the Clickless-mode.

How CPU/Contact works
1. Exif Data

Image file can store the Exif data of lens.
(For example, if you use Voigtländer 40mm F1.2)
Lens model

Voigtlander NOKTON 40mm F1.2

Focal length

40mm

Aperture

The aperture value used to take thepicture2.

Note on the lens correction functions in the camera body.

3.

Note on the auto sleep function

This lens cannot be used with all the lens correction functions thatare provided by the camera. This lens is designed for users to enjoy
the original character of the lens design.

The sleep mode is not reset by focusing or aperture operation of
the lens, and the camera may need to be awakened after a pausein use. The sleep mode is reset by a half press of shutter button ordial operations on the body.However, it is recommended to turn off
the auto sleep function in the body setting in order to alleviate thiscomplication.

● Specifications
Product Name
Focal Length
Maximum Aperture
Minimum Aperture
Lens Construction

NOKTON 40mm F1.2 Aspherical
40mm
F1.2
F226 groups 8 elements

Angle of View
Aperture Blades
Minimum Focus
Macro Ratio
Filter Size
Maximum Diameter
Length54.9°
100.3m1:4.9
Ø58mm
Approx. Ø70.8mm
Approx. 56.4mm

WeightApprox. 400g
Lens Hood
Available
Mount
RF-mountAperture Ring
Available (Manual Setting)Supported Focus Assist Functions Magnification function
Focus peaking function
Focus guide *1
Electric Contacts
Available* Specifications and information are subject to change without notice.

● Specifications
Exif Data
Available
In-body camera shake correction possible* only on camera bodies with Image Stabilization
function
Supplied Accessories
OtherFront Cap, Rear Cap, Lens Hood,
Selective Aperture Control System*1 With out EOS RP*2 Magenta cast may occur at the periphery of the angle of view depending on the shooting conditions
with EOS R, EOS RP, and EOS R6. This is part of the character of this super-fast lens and is not a defect.

* Specifications and information are subject to change without notice.