Specifications

To mount the lens, first align the red positioning point on the lens with
the red dot above the camera mount as illustrated.
Then turn the lens in the direction of the arrow until it stops and the lens
release button pops out with a click.
Make sure the lens release button has popped out. Otherwise, the lens will not work
properly. DO NOT press the lens release button while mounting or it may not pop out.
When film is loaded, make sure it is completely advanced to the next frame before
mounting the lens.
Warning:
If your
camera
look like
this, with a
red dot
showing
inside the
camera
mount, do
not mount
the lens
yet, correct
exposure
cannot be
ensured if
you do.
To release the stop-down lever, unfold and lightly press it down so it pops out. Then
mount the lens. Leave the stop-down lever as it is. Normal position of the lever-->>
2) Setting Up the lens for AE (Automatic Exposure) Photography
Note: With the exception of the Canon fish-eye 7.5mm f/5.6 lens, be
sure to place the lens with its front end down (as illustrated) to avoid
damaging the protruding pins.