Wheeling Sunday register. [volume] (Wheeling, W. Va.) 1882-1934, 1893-12-10

action OF the light in those parts Of its
surface which were reserved for the
other figures. The trouble in such a
matter is to prevent the showing OF the
line OF demarcation between the three
separately exposed areas Of the plate.
Generally this line, not necessarily q
sharp one, and preferably one that is
not sharp, is made TO fall 10 q fold Of
drapery, TO follow some dark line where
it will be unnoticed, or TO cross some
dark field in the plate. Every precau-
ton has been carefully observed In the
Pennington plate, In the original point
from which there are only one or two
points whereat the experienced eye may
detect the method OF procedure.
Gentlemen Of the jury" is a simpler
matter, consisting Of keeping a back
ground so dark that the plate will not
be affected by il. Thus a light object
in any part Of this dark area will affect
the sensitive plate In the camera with
out altering the condition Of other parts
of the plate. and, by moving the illu-
minated object from one point 10 an
other, fresh images are produced on the
plate, each being unaffected by the TAX
llA VI SMOeANN0AN AAlMeEt III 0A~
jacent parts OF the plate film.
Special measures have been taken
In this instance 10 clear the plate be-
tween the images. The dark back
ground is familiar in scientific photOg-
raphy, especially in the study OF animal
lOcomotion. Photographs Of jumping
and running are made by the use OF a
Gamers 10 which is fixed q rotary expos
ing apparatus. The rotary 'exposer"
is perforated with two or more openings
during each passage Of which across the
transporting an exp0Surs is made. In
this way from ten 10 twenty distinct
photographs of o jump are taken on
one plate. Naturally the figures over
lap each other, but there is an authentic
record OF the position Of the figure st
each stage Of the movement and the re-
lation OF this position 10 all the others.
The processes here sketched belong
to the order OF freak" photographs
that are considered the most Legitimate
by the Photographic "sharps." There
are many variations on the method.
| Thus, q boy seated on a bench, leans, In
one exposure, 20 the right, in another
10 the left, giving him the appearance
In the 1nal image of q being with two
legs but with two bodies, two heads aud
four arms. But these are the common
places of the comic processes.
A form OF freak" which the sharps
regard as much less scientific Is Illus
trated in the other examples above men
toned. The figure holding aloft the
two chairs and a duplicate figure Ia an
other attitude is an instance OF double
printing so cleverly done as almost
TO defy detection. The figures are sep.
arately photographed, and in the first
printing a space is reserved on tho pa
per by placing q mask precisely corre-
spending to tho figure and accessories
that are afterwards TO be printed In. In
the second negative everything is mask-'
ed out save the feature that is TO DO
printed within the space left by the FIRST
mask. Such printing has 10 be very
p|rettily done 10 deceive the eye into
thinking that the whole is an ordinary
Photographic print, and IN the present
instance the closest scrutiny is required
70 reveal the functions.
The gentleman Of tho bottle and glass
is another case Of dot bic printing. In
photographing the figure right side up
tho TROUSERS are pulled up, tho flaps OF
the coat similarly treated, the Dot tic
AMI glass pointed down, tho heels lifted
and the shoulders drawn up 90 add 20
the Illusion where the figure is invert-
ed. A print being taken from tho pho
tograph OF the figure. this IS neatly cut
out and laid on q negative containing
the background; so that when
the print is made, a white masked spot
remains II the middle. AS In tho pre-
vious case the negative containing the
figure is now masked so as 10 print the
figure only. The sheet containing the
background Is now placed under the
masked negative containing the hgure'
aud the latter is thus printed In the In
verted position within the white space
left by the first mask.
But for the error as 90 the arm. the