Canon EOS 50 E - Page 25

Part 1: General Information
( 10) Shooting conditions:
1) 100-percent AE
2) 100-percent flash use
3) 50 / 50 Flash and AE
• At 20'C:
• At -20°C
10-2 Built-in flash range
The following operations were executed sequentially for
each frame in accordance with the test procedure
described below: AF search (infinity to near focus to
infinity), AF achieved, meter on for 4 sec., and shutter
release.
The following operations were executed sequentially for
each frame in accordance with the test procedure
described below: Built-in flash pops up and recharges,
AF search (infinity to near focus to infinity), AF achieved,
meter on for 4 sec., shutter release, and retraction of
flash head.
1) and 2) above were executed alternately.
The following operation was repeated three times: Film
loaded, 36 frames exposed, automatic film rewind (film
removed), and 20 sec. later the Command Dial was
switched between P and L (automatic battery check).
After the camera and film were exposed to a temperature
of -20'C for three hours, the following operation was
repeated three times at 3-min. intervals: Film loaded, 5-
frame continuous shooting at 20-sec. intervals until 36
frames exposed (the last frame is exposed singly), auto-
matic film rewind (film removed), and 20 sec. later the
Command Dial was switched between P and L (automatic
battery check).
The maximum flash range depends on the lens' maxi-
mum aperture. Item 7-12 showed the flash range when
anj/2.8 lens is used. For other lenses, the maximum
flash range (rounded off in meters) is calculated with the
following formulas:
1. For negative film
This formula takes the film's exposure latitude into
account. It tolerates underexposure of one stop.
ISO 100 film: Divide 18 by the maximum aperture.
ISO 400 film: Divide 36 by the maximum aperture.
2. For reversal film
For all film speeds: Divide the Guide No. (m) by the
maximum aperture.
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