Dioptric Adjustment; Holding The Camera - Canon EOS Rebel XT Instruction Manual

Dioptric Adjustment
You can adjust the sharpness of the viewfinder image. By adjusting the
diopter to suit your eyesight, you can see a sharp viewfinder image
even without eyeglasses. The camera's adjustable dioptric range is -3
dpt to +1 dpt.
Turn the dioptric adjustment
knob.
Turn the knob left or right until the AF
points in the viewfinder look sharp.
The illustration shows the knob at the
standard setting (-1 dpt).
[l]
If the camera's dioptric adjustment still cannot provide a sharp viewfinder
image, using Dioptric Adjustment Lens E (10 types, optional) is recommended.
Holding the Camera
To obtain sharp images, hold the camera still to minimize camera
shake.
Firmly grasp the camera grip with your right hand, and press your
both elbows lightly against your body.
Hold the lens bottom with your left hand.
Press the camera against your face and look through the viewfinder.
To maintain a stable stance, place one foot in front of the other
instead of lining up both feet.
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