Canon AE-1 - Manual (Page 33)

A cce a o fm such an ayecup, dioptric
adjustment lensei. angle finders, and mag­
nifier can be attached to the
viewfirKfer
eyepiece.
Dioptric Adjustment Lenses
Dioptric adjustment lenses can be
attached by insertir>g them from above into
the grooves in the viewfinder eyepiece to
compensate for the individual eyesight. With
them, near-sighted or far-sighted persons can
perform photography without glasses.
The built-in eyepiece lens of the AE-1 has
diopter. The following 10 kir>ds of
dioptric adjustment lenses are optional ac­
cessories: +3, +2, +1.5, +1, +0.6, 0, -0.6.
-2. -3 and 4 {diopters).
One way of selecting the correct dioptric
adjustment lent for you la to select the one
that it the closest to your glasses in regard to
number of diopters. But, we propose that,
when you select the most appropriate dioptric
•djuftnfsent lem, you actually look into the
viewfinder through it after placirsg it over the
eyepiece.
Because the camera itself has diopter,
the diopters of the lenses are recorded as the
real ромг when attached to the camera, thus
ref1aciir\g the power of the camera's
viewfiodef.
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