Reference Guide

normally on the lens while you
shoot, camera handling is improved
because you don't have to move back
to the camera body to make this
adjustment.
Additionally, EOS-1 Autofocus still
works in manual focus, confirming
sharpness even in low light with
wide-angle lenses.
With Ultrasonic (USM) lenses,
though, manual focusing takes on a
completely new dimension. To begin
with, it's electronic rather than
mechanical. This is superior to
conventional mechanical focusing in
several ways. The 200, 300, and
600mm telephotos can be set for
half-speed, normal, or double-speed
manual focusing. The EF 28-80
automatically varies focusing speed
from normal to 6 times normal,
depending on focal length! This has
the effect of equalizing the amount
of focusing at all times. Another
aspect of USM manual focusing is
its incredibly smooth, light touch.
It's particularly useful with
otherwise heavy-focusing optics
such as the 50mm f/1.0L and 85mm
f/1.2L.
But by far the most intriguing
benefit of USM lenses for manual
focusing arises from the fact that,
with EOS-1, they don't have to be
switched out of AF mode to be
manually focused. Simply set the
USM lens to AF, EOS-1 to One Shot
AF, and press the shutter release
halfway.
When using Custom Function #4 with
USM lenses, you'll discover that
manual focus is available in both
One Shot and AI Servo AF modes, not
just One Shot. Also, with this
feature, it's not necessary to
maintain finger pressure on the
shutter release to achieve manual
14
focusing. When you want AF, simply
push the AE Lock button with your
thumb.
This Canon-exclusive benefit allows
the photographer to overcome the
problem of focusing on an off-
center subject while retaining the
benefits of autofocus. No other SLR
even comes close to this degree of
sophisticated control!
5. FILM HANDLING AND MOTOR DRIVE
OPERATION.
It almost goes without saying that
automatic film handling and motor
drive operation are essential
elements of any truly professional
camera. The EOS-1 is highly
advanced in this area.
Automatic Film Handling Accelerates
Operation and Prevents Mistakes.
Let's start with a basic example.
Film loading is not a creative
aspect of photography. Therefore,
it should be completely automated
so you can get on with more
important matters. With EOS-1, it
is. As soon as you close the back,
the film is automatically
positioned at Frame 1. EOS-1
doesn't disrupt your concentration
with additional steps.
What about setting film speed?
Sure, we have DX if you want it.
But we don't prevent you from
checking the film speed if you use
it. If you want to use non-DX
cartridges, that's OK too. There's
a manual override. There's even a
way to turn off the DX completely,
by activating Custom Function #3.
With Custom Function #1, you
control autorewind. Just turn it