Canon F1 Manuale Utente

Viewing and Focusing

Focusing is performed in the small round area in the
center of the viewfinder. The smaller central circle is a
split-image focusing screen and around it is the micro-
prism ring. The split-image rangefinder ascertains that
the image is "in focus" when the image divided horizon-
tally in half matches and becomes one complete image.
The microprism rangefinder presents a clear and steady
image when in focus. The microprism conveys a broken,
shimmering image when not accurately in focus. It is
also possible to focus with the matte screen outside the
smaller central area. You can focus with either of these
focusing aids as you like, depending on the subject
condition and your preference.

A curved line may sometimes be visible in the lower

part of the viewfinder according to the angle of the
incoming light. This is a reflection of the beam-splitting
mirror of the condenser lens in the TTL light measure-
ment system.

Viewfinders

The Eye-level Finder can be removed and interchanged
with other viewfinders. To remove the finder, pull it
towards the backside of the camera while pressing the
two stopper buttons on both sides of the finder. To
attach a finder, slide it in from the rear of the camera
so that the attachment rails of the viewfinder are level
with the camera body. Push it all the way in. It will

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