Camera EOS 20D Digital, Инструкция по эксплуатации

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86
AE lock enables you to lock the exposure at a different place from the
point of focus. After locking the exposure, you can recompose the shot
while maintaining the desired exposure setting. This is called AE lock. It
is effective for backlit subjects.
1
Focus the subject.
¡
Press the shutter button halfway.
s
The exposure setting will be displayed.
2
Press the <
A
> button.
(
0
)
s
<
A
> lights in the viewfinder to
indicate that the exposure setting is
locked (AE lock).
¡
Each time you press the <
A
> button,
it locks the current exposure setting.
3 Recompose and take the picture.
¡
If you want to maintain the AE lock
while taking more shots, hold down
the <
A
> button and press the shutter
button to take another shot.
A
AE Lock
N
AE lock indicator
¡
If One-Shot AF or AI Focus AF (when not AI Servo AF) is set, pressing
the shutter button halfway to focus will automatically set AE lock at the
same time.
¡
The AE lock effect will differ depending on the AF point and metering
mode. For details, see “AE lock” (p.149).
87
When bulb is set, the shutter stays open while you hold down the shutter
button fully, and closes when you let go of the shutter button. This is
called bulb exposure. Use bulb exposures for night scenes, fireworks, the
heavens, and other subjects requiring long exposures.
1
Set the Mode Dial to <
a
>.
2
Set the shutter speed to “buLb.”
¡
Look at the LCD panel and turn the
<
6
> dial to select “ buLb .”
¡
The next setting after “ 30" ” is “ buLb .”
3
Set the desired aperture value.
¡
Set the <
4
> switch to <
J
>, and
while looking at the LCD panel, turn
the <
5
> dial.
4
Take the picture.
¡
Press the shutter button completely.
s
The elapsed exposure time will be
displayed on the LCD panel.
(Displays 1 sec. to 999 sec.)
¡
The exposure continues as long as
you hold down the shutter button.
Bulb Exposures
Elapsed exposure time
Since bulb exposures will have more noise than usual, the image will look
rough or grainy.
¡
Bulb exposures may result in grainy images due to picture noise. You
can reduce noise by setting C.Fn-02 [
Long exposure noise reduction ]
to [ 1:On ] (p.141).
¡
For bulb exposures, using Remote Switch RS-80N3 or Timer Remote
Controller TC-80N3 (both optional) is recommended.