The times. [volume] (Richmond, Va.) 1890-1903, 1898-10-19
CALL 1T COLOR PRINTING.
New York Photographers Discuss Mr
McDonough's Discovery.


Photographers are still discussing the
'Heralds story of the process BY which
friends Of the late James w. McDonough
assert, the art OF photographing in ma
tural colors has been accomplished. The
general opinion IS that the process was
nothing more than a beautiful and Ella
borate form of color printing.
| saw some OF the McDonough plates
at the establishment Of Edward Bier
stadt. at No. q Reade street When the
positive plate and the colored screen
which accompanies IL are shown sepa-
rately they look like smoked glass. Wheh
they are placed together ana held up
To the light the observer sees the most
delicate c0lorings.
II the position of the plates Is even
slightly changed there results strange
tumble OF colors by disturbing the re-
gister OF the plates | saw yesterday
rose with green petals surrounded b. ied
leaves. The extreme accuracy and deli
cacy required i'm the handling OF tic
plates was the CHER objection urged
against the use OF the process for oFGi-
nary commercial purposes.
Lines Of colors upon the screen are
about one three-hundrodths OF an inch
spoil the effect of picture.
That part Of the process which seems
10 be the most difficult Is the printing.
one photographer declared that owing To
the shrinkage OF paper he doubted very
much II one perfect specimen could De
made without several thousand unsuc-
cessful trials.
David y. CaryalhO. who invented sew
eral Photographic processes. has made
4 Of rl n
called When seen at his office, NO. go
Broadway. yesterday. he said he did not
have any motive for criticizlng the Nc
DonOugh process. 20 his own patents,
which were along the same lines had long
agO been superseded by later inventions.
photography iu coiors as il rs UNDER
stood he said. means the reproduction
OF the colors before the camera. The et-
feet of a dark blue on a sensitive plate.
when developed is TO produce the same
result as If white were placed before the
camera. Light corn color Affects the
plate in an entirely opposite manner
When red is photographed-Or, rather.
might say. when IL is not photographed
tile result IS nearly the same as II black
had been used. Utilization OF the three
colors i'm the minute lines produces "A
graded result which IS repeated over and
over again In the negative.
when a positive is made from that
negative. however. the results 10 which
I have called attention are reversed, and
that which was transparent IN the mega
tive becomes Opaque IN the positive, and
the Opaque parts I'm the negative are rem
dered transparent in the positive. Place
the positive and the negative together.
The red which ala not photograph well
because the line was transparent I'm the
negative. becomes an Opaque line I'm the
positive. and lies directly over the red
ruled line In the screen. The blue. which
photographed Opaque In the negative. is
now transparent Tn the positive, and lies
over the blue in the screen.
owing 10 their multiplicity, these fine
lines blend together. and different colors
are seen when submitted 10 the action
OF transmitted light.
MT McDOnOugh did not reproduce coll
ors. The colors were his own. He has
blended coiors by simply mechanical
means
NOW as 20 his printing methods. We
will leave out the question 81 expense,
which in itself must be enormous when
we consider that the perfect ruling Of
thousands Of lines g. necessary 20 exact
~ register each line ON a corresponding
line Mr.. McDonouRh has not photo
graphed colOrs. i'm my opinion. but has
obtained colOrs artihcially. / should de-
nominate what Mr.. McDonough Las done
as color PRINTING!
At the studio of William Kurtz. In
east Twenty-third street. and AZ the es-
adjustment OF Edward Rierstadt. T saw
numerous examples OF the color photo
graphy in use for the reproduction Of
paintings. IN both NJ the processes an
ployed the objects were photographed
three times by The use of screens IN the
three primary colors. From the plates
thus nreDared half tones were made. from
which the photographs were printed The
colors were placed upon each other and
the result showed sreat delicacy OF shad-
|, ing.-New York Herald.