Reference Guide

CANON EOS-l:
THE IMAGE OF THE NEW PROFESSIONAL.
Professional photographers are
extremely important to Canon. As
"the eyes of the world," you enrich
our lives with your visual skills.
Because you are our most valued
customers, we always do our best to
provide you with the highest
possible quality in photographic
products. During the past 18 years,
the F-l cameras and the FD lens
system have demonstrated our
commitment to your excellence.
The development of a new
professional SLR presents an
exciting challenge. While
incorporating the best features
from the past, anew design must
also include present-day demands.
Most importantly, it must provide
a platform for future developments.
However, conventional camera
designs are burdened with many
limitations.
Canon's new professional SLR
shatters the barriers of
conventional design, and reaches an
unprecedented level of excellence.
This camera embodies many new
technologies designed to improve
its quality, reliability, and ease
of use. EOS-l reinforces our
commitment to you, the professional
photographer.
The EOS-l is based on the following
priorities:
6
1. Simplified operation and
improved camera handling.
2. Enhanced creative control.
3. Outstanding autofocus
performance.
4. Superior film handling &
motor drive operation.
5. Rugged reliability under
all working conditions.
6. Professional quality lenses.
7. Full-featured TTL flash system.
I. SYSTEM FEATURES: CONCEPTS
DEVELOPED
IN THE EOS SYSTEM AND
EXPANDED IN THE EOS-l.
As a foundation, the existing EOS
system already contains many
improvements over conventional
camera technology. EOS-l takes full
advantage of these characteristics
and expands their usefulness.
Electronic Mount
Consider the fully electronic lens
mount. Its most significant
advantage over older designs is its
improved reliability due to the
elimination of mechanical linkages
between body and lens. Levers,
springs, and coupling pins are
gone. With fewer moving parts,
fewer things can go wrong.
At the same time, the amount of
information exchanged between body
and lens has been vastly increased
and improved. When you stop to
think about it, that's what all
those pins, levers, and springs
were for. But with the introduction
of an 8-bit super-microprocessor in
the camera body and a 4-bit
microcomputer with control IC in
each lens, every component in the
EOS system achieves incredible
performance without sacrificing
reliability.
One example of that performance,
exclusive to the Canon EOS system,
is precision aperture control. It
takes more than a conventional
diaphragm assembly to provide
consistent exposure accuracy in
every exposure mode with every
lens. In response, Canon's
engineers came up with a better
approach, the Electro-Magnetic
Diaphragm, or EMD.