Reference Guide

lets you use the camera's AF system
to set the precise zone of
sharpness in your photographs. It
can be particularly useful in low
light, or any other time when
depth-of-field control assumes
importance.
What's new about the EOS-1 in these
modes? For the first time ever, you
can use the Quick Contro~ Dia~ to
fine-tune your exposures. It's
quick and easy; just watch the
match-needle scale {or the EOS-1's
external LCD} to control the
exposure your way as long as you
want. If you prefer, there's
conventional Exposure Compensation,
which can also be set in 1/3
increments.
We've included Automatic
Bracketing, too. It's built-in, not
a high-cost add-on as with other
SLRs--and it is unbelievably easy
to use. The viewfinder and external
data displays graphically indicate
the degree of bracketing you've
selected, for 3 exposures from 1/3
to 3 steps apart. For even further
control, you decide when to shoot
each individual exposure in the
bracket sequence. It's perfect for
portraiture or other live subjects
where fleeting expressions
challenge the photographer to
capture the decisive moment. By the
way, you can select either aperture
or shutter speed as the variable in
manual mode, through Custom
Function #5.
Last but not least, AE Lock has
been simplified and improved. EOS-l
provides full control of this
valuable feature. Scan the scene in
any metering pattern, and lock
exposure when you're ready with a
simple touch of the AE Lock button.
The viewfinder exposure scale then
displays the locked value in
addition to the current meter
10
reading for easy reference. AE is
automatically locked upon focus
completion during Evaluative
metering as well.
Choice of Metering Patterns Matches
Camera Operation to Picture-Making
Situation
EOS-1 offers 4 available-light
metering patterns for unequaled
versatility.
1. Evaluative Metering: This
pattern analyzes 6 individual
zones in the picture area,
compares brightness and
contrast levels, and unlike
some others, determines subject
size. It is equally effective in
both horizontal and vertical
compositions. In the EOS-1,
evaluative metering has been
upgraded from older EOS models,
to provide improved exposure
accuracy with transparency film.
2. Spot Metering: Heavily
requested by our professional
customers, this new pattern
measures the central 5mm circle
marked in the viewfinder,
covering only 2.3% of the field
of view. Spot metering is
invaluable whenever you need to
pinpoint the precise area of
interest.
3. Partial Metering: Familiar to
current EOS owners, this
intermediate pattern expands
the metering coverage to 8mm or
5.8% of the picture area. It's
particularly useful with
backlit or contrasty situations
since it pro v ides a precise
reading of a larger portion of
the subject than spot metering.
4. Center-Weighted Averaging:
Makes sense in a professional