Canon Model 7S - Manual (Page 59)

How to Change Lenses
The lens mounting flange of the Canon 7S is
equipped with both the Canon standard screw-
in-mount and Canon special bayonet-mount M.
To detach a screw-in type lens (other than the
50mm F 0.95 lens) from the camera, hold the
lens barrel at its base and turn counter-clockwise
(illustrated by small arrow). To replace a lens,
keep lens cap on but remove the dust cap from
the lens. Turn the lens first counter-clockwise
for half a turn to insure that the lens threads
and the camera mounting flange do not cross.
Next, turn clockwise (illustrated by large arrow)
until the lens is securelly in place. •
• When mounting or dismounting a lens of 85mm
or greater focal length, be sure to set it at
the nearest footage setting.
• Do not change your lens in strong light. When
changing your lenses, have the replacement
lens at hand. Then quickly change the lenses
in the shade. . .or use your shadow as a shield
from direct light.
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