26 THREE-DIMENSIONAL PHOTOGRAPHYThe general contsruction is the rigid box so desirable in stereo
cameras, but the camera is not inconveniently bulky. The carry-
ing case measures only 4x5x7.5 inches over-all while the camera
itself measures only 3.5~4~7 inches.
For color work, Ektachrome 120 or Anscocolor provides excel-
lent results. For making stereos for reproduction either by normal
side-by-side halftone or anaglyph the camera is unexcelled.
REFLEcToRs.-At the present time the domestic market offers
the Stereotach, a fixed-adjustment reflector which may be used
with appropriate single-lens cameras for the production of satis-
factory stereograms. For the amateur interested only in the pro-
duction of a casual stereogram now and then, and for the begin-
ner who wishes to try out stereo, these reflectors are excellent.
The results are perfectly satisfactory within the limitations of
the instrument, but of course the serious stereographer will wish
to work with the double camera.
The stereo reflector does serve one purpose which cannot be
served in any other way at present. This is the production of in-
stantaneous pictures. The Stereotach does very well when used
in conjunction with the Polaroid Land camera, and makes pos-
sible the production of good stereograms in monochrome within
one minute after the exposure.
There are many technical applications particularly in the realm
of forensic photography, when this rapid availability is of great
value. Because stereo has met with such instant approval in the
forensic field, this special technique should not be overlooked.
Many years ago there was an adjustable reflector on the market
which was excellent in that it could be adapted instantly to any
negative size and any focal-length lens. Such reflectors were very
convenient, for while the stereographer will own and use the
double camera, there are many times when only the single-lens
camera is available, and if the reflector is carried habitually, it
will save the day when a good stereo subject presents itself.
It would be a mistake to say that the reflector replaces the
stereo camera, but at the same time every stereographer who owns
and uses a single-lens camera as well as those interested in making
stereo movies, will find it advisable to provide a reflector for
emergency use. Although the adjustable models are not available