STEREO PHOTOGRAPHY
STEREO PHOTOGRAPHY
Excellent 3D photographs
can be taken using one 35mm
camera.
The two photos must be located
by having the same object in one corner of the viewfinder in both photos.
The camera must be held as
level as possible. The side displacement can be achieved by transferring
ones
weight from one foot to the
other. The movement needed is only about 10 cm, but can be much more if
the
foreground is not close.
The best shots have a lot of foreground.
A portrait should be possible
if the subject remained still. Any scene having movement will contain
disturbing elements.
If slide film is used the
result is very pleasing and if the camera was not held level or not aimed
correctly
then the slide can be remounted.
The slides can be viewed
using two eye level slide viewers fixed together.
Good results can be achieved
using print film but viewing the prints is difficult without special equipment.
If you are blessed with good
eyesight then the`crosseyed ' method is very easy and can be quickly learned.
A viewing window is a great
help, but experienced viewers can almost instantly combine the two images.
The two photos should be
held at the correct angle, level, the correct distance away and brightly
illuminated.
By closing one eye and then
the other the viewing window can be held at the correct position and the
head
tilted to align the two
images. A lot of concentration is needed in the beginning - good eye
exercise !
An optical wedge or wedges
makes viewing easy.
Bright illumination is very
important.
Another method is to place
the photos about 50cm distance, hold up one finger about 20cm distance.
When focused on the photos,
two fingers will be seen. When focused on the finger three photos are seen.
Now while focused on the
finger move it towards you until a third photo image appears in the centre,
when these three images appear
to be about the same width the stereo image should pop into focus.
An extension having large peepholes for the eyes would help alignment.
Old specticles with the earhooks cut short ?
Mounted about 17 cm from the viewing window.
Lengths of coathanger wire fixed or glued into holes in the ends
of the cross timber as support.
The photos could rest on thumb tacks (push pins) which had not
been pushed in completely.
3D
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