Introduction; Features; Five Difference Automatic Exposure Modes; The Employment Of Total Digital System To Process With Speed And Accuracy All Incoming Information - Canon A-1 Repair Manual

1. Introduction
In April, 1976, Canon introduced a landmark camera, the
Canon AE-l. It incorporated a very reliable computerized
AE mechanism into a compact body that can be marketed at a
very competitive price due to revolutionary production
techniques. The AE-l has been a huge success and completely
changed the face of photo hardware marketing.
With the AE-l firmly established as the best selling SLR in
the World, design work progressed on a more versitile ver-
sion. This work is now complete and the result is the CANON
A-l, the Apex of the AE camera world: the highest quality,
most durable, most feature laden automatic exposure SLR in
the world.
The major goals which guided the design of the A-l were:
- Incorporation of advanced digital technology
- Compact, easy-to-handle body
- Compatability with AE-l system components
- Interchangeability of parts with AE-l
- Improved durability
2. Features
2.1 Five difference automatic exposure modes
o Full Aperture TTL Metering
Shutter speed priority AE
Aperture priority AE
Programmed AE
Electronic flash AE
o TTL Stopped-Down Metering
Stopped-down AE at (regardless of the types of lens
attached or whether a lens is attached at all).
2.2 The employment of total digital system to process with
speed and accuracy all incoming information
After converting the brightness information from analog
form into digital form, digital computation takes care of
information input, calculation, information storage,
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