Canon EOS 1 Instructions Manual page 87

Operation
Autofocus starts when shutter button is
pressed halfway. Focus is locked when
AE lock button ( ) is pressed.
• AE lock is not possible when "2" is set.
Shutter speed set by main dial. Aperture
value set by quick control dial or by com-
bined operation of exposure compensa-
tion button ( ) and main dial.
Aperture value set by main dial. Shutter
speed set by quick control dial or by
combined operation of exposure com-
pensation button (
• For operation when combined with custom
function F-11, refer to "Combined Use of
Custom Functions F-5 and F-11" on page
92.
Shutter speed, aperture value and
exposure compensation, flash exposure
compensation and AEB step amounts
set in 1/3-stop increments.
Shutter speed and aperture value set in
1-stop increments, and exposure com-
pensation, flash exposure compensa-
tion and AEB step amounts set in 1/3-
stop increments.
Shutter speed, aperture value and
exposure compensation, flash exposure
compensation and AEB step amounts
set in 1/2-stop increments.
Manual focusing is possible.
• This function works only with lenses
equipped with an electronic manual focus-
ing ring.
Manual focusing is prohibited.
• Manual focusing by setting the lens' focus
mode switch to "M" is possible.
2: For sports photography using focus
When making manual exposure adjust-
ments, this function lets the photograph-
er choose whether to use the main dial
for adjusting the shutter speed or aper-
ture value. This option is convenient for
studio flash photography where the
shutter speed is kept constant while the
aperture is frequently varied to alter
) and main dial. depth of field and exposure.
This function lets the photographer
input shutter speed and aperture set-
tings in any increment that he or she is
used to. 1/2-stop exposure compensa-
tion settings are also possible, providing
wide flexibility to satisfy various shoot-
ing styles.
This option disables the manual focus-
ing capability of the electronic ring pro-
vided on many USM lenses, eliminating
the possibility of accidentally turning the
ring and shifting the focus after autofo-
cusing is completed.
Compatible Lenses
EF 50/1.0L USM
EF 200/1.8L USM
EF 400/2.8L USM
EF 600/4L USM
EF 28-80/2.8-4L USM
Custom Function Chart
Useful Situations
prediction in AI Servo AF mode, this
option lets the photographer tem-
porarily stop the focus.
EF 85/1.2L USM
EF 300/2.8L USM
EF 500/4.5L USM
EF 1200/5.6L USM
Reference
Page No.
60
42
45
51
54
60
78
36
87