Canon EOS 20D Service Manual page 38

11-12 Flash exposure
Compensation:
11-13 Effective flash range:
11-14 Improper FE lock
warning:
11-15 Sufficient flash
indicator:
11-16 Flash-sync timing:
11-17 Flash duration:
11-18 Color temperature:
11-19 Optical axis space:
11-20 Power source:
11-21 Red-eye reduction:
1) Setting precondition: In Creative Zone modes
2) Compensation amount: Up to ±2 stops in 1/3-
or 1/2-stop increments
3) Cancellation: Set exposure level to 0
4) Up to ±2 stops in 1/3- or 1/2-stop
increments.
• Flash exposure compensation for built-in
flash and Speedlite can be set with the
camera.
EF-S 17-85mm f/4-5.6 USM
ISO
WIDE : 17mm
100
1 - 3.3
200 1 - 4.6
400 1 - 6.5
800 1 - 9.2
1600 1 - 13.0
H:3200 1 - 18.4
* If the focusing distance is shorter than 1 meter and no hood is attached
to the lens, the flash will be partially obstructed by the lens barrel.
* If you use a high ISO speed and the maximum aperture, overexposure
may result.
* The maximum range is calculated by dividing the respective ISO speed's
nominal Guide No. by the f/number.
During FE lock, the flash icon blinks.
None
1st-curtain sync
• With C.Fn-15-1 (Flash sync timing), 2nd-
curtain sync is possible.
1 ms or shorter
Equivalent to daylight
Flash center to lens axis: 91.93 mm
Supplied by camera's power source.
When the built-in flash pops up, the red-eye
reduction lamp lights and then the flash fires.
(1) Type: Illumination by lamp
(2) Compatible modes: Operates in all modes
except Landscape, Sports, and Flash OFF.
(3) Setting method: With the menu's [Red-eye
On/Off].
(4) Conditions for illumination: Lights after
focus is achieved when the shutter button
is pressed halfway (SW-1) in the One-Shot
AF mode.
(In the AI SERVO AF or MF mode, the red-
eye reduction lamp lights immediately at
SW-1.)
33
General Information
(m)
TELE : 85mm
1 - 2.3
1 - 3.3
1 - 4.6
1 - 6.5
1 - 9.2
1 - 13.0