Canon 420 EZ User Manual
Page 31
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2. When the lens’ maximum aperture
blinks, the camera is warning that A-
TTL is impossible and the background
will be underexposed. The main sub
ject, however, will be exposed cor
rectly because normal TTL (see p.20)
functions instead of A-TTL.
• The maximum aperture value may
stop blinking when a slower shutter
speed is set; A-TTL is possible but be
careful of camera-shake.
3. When the lens’ minimum aperture
blinks, the camera is warning that
A-TTL is impossible and the back
ground will be overexposed. The main
subject, however, will be exposed cor
rectly because normal TTL (see p.20)
functions instead of A-TTL.
• The minimum aperture may stop
blinking when a faster shutter speed
is set: A-TTL is possible.