Optional Viewing Aids - Canon A-1 Instructions Manual

OPTIONAL VIEWING AIDS
Dioptric Adjustment Lenses S
T h e clioptr ic adjustment le ns S is an acces-
sory wh ich slides into th e grooves of the
viewfinder eyepiece fro m above to correct
individual eyesigh t. With the m , eyeglass
wearers can phologrn.ph without glasses.
T h_e A- 1 's eyepiece has a standard dioptric
ad.1ustment o f -1 for normal eyesigh t.
The fo llo wing 10 kinds o f diop tri c adjust-
men t lenses a rc optional accessori es: +3 ,
+2 ,
~- 1. 5,
+l, +0.5, 0, -0.5, -2, -3 and -4
(diop te rs) . T h e spec ified diopters o f these
lenses arc recorded as the real p o wer when
a ttache d to the camera, reflecting th e -1
p o wer of t he cam era's vie wfinder.
Yo u could select the appro pri ate d ioptric
lens by choosing t h e one closest to the num-
ber of diopters in you r glasses p rescription .
But, we propose t h at you actually look
- 50-
through the viewfinder after placing the
dioptric lens over the eyepiece to be sure
you ha ve th e best o n e .
Angle Finders A2 and B
There are
some
typ es of photographic
subjects for which viewing them through the
eye-level viewfinder of the camera is un-
comfor table. This is particularly true in the
fiel ds of copying, close-ups, photo macro-
graphy and photomicrography. Then it
might be m ore convenient to mount one o f
these angle finders over the camera's eye-
piece. Roth angle Gnders rotate 90° for
comfortable viewing from above or from th e
side.
Angle find er A2 gives a correct image
top_-to-bottom but .
~eversed
left-to-right
w hile the more sophisticated An gle Finder B
gives a completely n ormal image. Both
show the entire field of view as well as
viewfinder information.