Evening star., 1948-07-04
By Alexander J. Wedderburn
cvrotor Of Photography
IL C:Ak Inr kiA,ifian

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If you are a 35-mm. color en-
thusiast you will get the most en-
joyment from your hobby with a
side or film strip protector. Even
your monochrome efforts can be
turned into slides that will provide
hours of fun and entertainment
for yourself and for your friends
and family.
The greatest criticism that has
been leveled against the miniature
films is that of smallness. The fell
lows who use the large cameras
are eternally displaying their huge
engagements - free from grain, OF
course-and heckling about the tiny
35s. BY the use of the slide pro-
jector. little films will at last come
into their own. Some will argue
that you can view the Transparent
cies by simply holding them up tc
the light. But this restricts your
scope of enjoyment to great ex-
tent and will strain the eyes after
long session of looking" On the
other hand, if you have protector
it will be possible to throw the
images on a viewing screen in di.
mensions that will put your friends
of the 1arge-sized films to shame
Since your color slides will have
been processed by reversal proc
ess, all you will have to do is mount
them in a cardboard or glass holder
and run them through the projec-
tor. The monochrome film pre-
sents different problem as it comes
to you from the professor in mega
tive form. While these negatives
may be printed on positive" film
the usual practice is to make the
positive on a glass plate specially
for this purpose.
Black and White Slides.
This plate or slide is simply g
sheet of glass. usually 3A by
inches, coated with a noncolor sen.
sitive emulsion of either bromide
or bromo chloride, IN various de-
grees of contrast, after the manner
of Photographic printing papers
The best negatives for making
slides are those free from scratches
abrasions, pinholes. etc. They
should also be well exposed, having
the required degree of contrast anc
other features desirable in gooe
printing negative
The slides can be made either by
contact or projection methods. 1r
view of the speed Of the bromide
emulsion, you will find it desirable
to reduce the amount of light, wher
making contact slides, from thai
which you ordinarily use witt
papers. Either smaller wattagt
lights may be substituted in ths
printer or the light can be diffusee
with several layers of white paper
The slides are printed in the same
way that ordinary contact prints arr
made, emulsion to emulsion. Be-
, cause of the small size of the work
} ing area it is extremely difficult II
do any dodging when using q con-
tact printer.
), In projection printing of slide'
you will have little or no difficult!
with light intensity since this car
be controlled by means of the dia'
phragm opening of the lens. Dodg
, ing, too. is easy to accomplish
through the same methods you us'
in dodging your paper prints
Should your negative size be large
T than the size of the slide, bel.ow
/ extension with an auxiliary lens O
shorter focal length than the on
designed for your enlarger is nee
essary to obtain the desired re-
duction.
Photograph the Negative.
If you do not have an enlarger
, you can use . camera to photo
graph the negative. Place tn