Dioptric Adjustment - Canon EOS 1D Mark III Instruction Manual

Vertical Shooting
The bottom of the camera provides a shutter button, <6> Main Dial,
<S> AF point selection button, <A> AE Lock button, <p> AF
Start button, and <I> FE lock/Multi-spot metering button all for
vertical shooting.
Adjusting the Viewfinder Clarity
If the camera's dioptric adjustment still cannot provide a sharp viewfinder
image, using Dioptric Adjustment Lens Eg (optional) is recommended.
Before using the vertical shooting
controls, set the vertical operation on/
off switch to <1>.
When not using the vertical shooting
controls, set the switch to <2> to
prevent accidental operation.
Remove the eyecup.
1
While grasping both sides of the
eyecup, slide it upward to remove.
Turn the dioptric adjustment
2
knob.
Turn the knob to the right or left until
the AF points or the center spot
metering circle looks sharp in the
viewfinder.
Attach the eyecup.
Basic Operation
39