Dioptric Adjustment; Loading The Film - Canon 310XL Instructions Manual

Dioptric Adjustment
While looking through the viewfinder, turn the
eyecup to adjust the eyepiece to your vision.
*1 Turn the focusing distance ring to infinity.
2 Look through the viewfinder. Turn the dioptric
adjustment ring until the subject in far distance
appears clearest and sharpest.
The eyepiece adjustment range is from —4 to +2
diopters.
Loading the Film
Insert the film cartridge with the identification label
placed as shown in the picture.