Viewing And Focusing - Canon FTb Instructions Manual

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Out of Focus
In Focus
Viewing and Focusing
Composition
The exact picture image to be photographed can be seen
on the focusing screen of the viewfinder without any paral-
lax
_
This enables you to determine the exact composition
of your scene before pressing the shutter release button_
Focusing
The center circular section of the viewfinder is a micro-
prism screen rangefinder made up of microscopic prisms
for fast and precise focusing
_
While looking through the viewfinder, revolve the focusing
ring_
It is in focus when the image in the rangefinder
becomes sharp and clear_
• An optical curve may sometimes be visible in the lower
part of the viewfinder according to the angle of the incom
-
ing light_
This is a reflection of the beam-splitting mirror
added onto the condenser lens in the TTL light measure-
ment system.
25

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