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Autofocus
(AF)
The Autofocus (AF) mechanism automatically
adjusts focus by measuring the distance-to-subject.
Focusing is accomplished by a TTL (through-the-
lens) phase-difference detection system. More
simply, an AF sensor catches the light reflected
off of the subject, calculates the distance, and
activates the lens to focus. The IS-1 AF system
is particularly advanced, because it even works in
the dark by using an infrared beam of light.
Autofocus is designed to focus on whatever
appears in the center of the viewfinder. If you
wish to position your subject outside the
center of the frame you can use the focus lock
(see p. 21). This will also lock the proper
exposure (AE lock).
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Summary of Contents for IS-1
Page 1: ...INSTRUCTIONS...
Page 53: ...How to take better pictures 52...
Page 66: ...3 Adjust the length of the strap as desired 65...
Page 68: ...Soft case A Carrying case A Variable dioptric adapter A 2 4 0 2 2 0 67...
Page 69: ......