Reference Guide

of choice for today's
photojournalists, even though it is
technically designed for amateur
use.
Increasing the body material
thickness by 25% compared to the
T90 and adding layers of nickel,
copper, and black chrome plating,
the EOS-l achieves superb rigidity
while reducing weight compared to
an all-metal body. Its aluminum
mirror box ensures superior flange-
to-film alignment, while the
stainless steel lens mount's outer
diameter has been increased from 48
to 65mm, an increase of nearly 35%
compared to the F-l.
Operational Reliability.
With electronic interfaces between
body, lens, and motor drive,
electrical contact must be
maintained at all times. On EOS-l,
all body-side contact points except
for flash are gold-plated and over-
sized for added reliability. The DX
code sensors and Power Booster
contacts are doubled to ensure
proper operation even if one
contact fails.
EOS-l also executes a complete
self-checking sequence before each
exposure. In this way, improper
operation is prevented before it
can cause any problems.
Increased Resistance to Hostile
Environments.
By reducing the number of external
dials and switches, the design of
the EOS-l becomes inherently less
susceptible . to water damage. But in
addition to this, all possible
entry points are fully gasketed for
extra protection. Special water
drains are built inside the input
dial assemblies and Power Booster
attachment area. Even the shutter
blades are water repellent!
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Another sensible design element is
the LCD data panel itself. While
providing a centralized information
display, it prevents accidental
changes to such key settings as
metering patterns and exposure
modes. It's also been angled back
for easy viewing and is provided
with a built-in illuminator.
7. PROFESSIONAL QUALITY EF LENSES.
Canon recognizes that any truly
professional SLR system must be
backed up by quality optics. For
this reason, we are developing a
full line of EF lenses, including
four new professional L-Series
formulas introduced with the EOS-l.
This brings the number of EF lenses
to 28, with 10 of those in the L-
Series.
Special Techniques Create Unmatched
Performance.
Canon's reputation for excellence
in optics has been well-established
for many years. With the
introduction of EOS, that
reputation not only remains intact,
but reaches new levels.
EF lenses have the largest mount
diameter ever made for 35mm
cameras. This permits optical
innovation while increasing the
camera's overall reliability. You
can feel the improvement in
stability as soon as you attach a
lens.
Optically, EF lenses make use of
many sophisticated techniques to
improve performance. Among the most
impressive of these is the
extensive development of aspherical
lens elements. Canon is far ahead
of all other SLR manufacturers in
this area, with 10 lenses in the EF
line alone that contain 1 or more
aspherical surfaces.