Mamiya 645DF, Instructions Manual

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57 58
P
Av
Tv
M
X
CF
C1
C2
C3
A
Metered-value difference indicator
Keep pressing the AEL button , and the
difference between the metered exposure value
and the exposure of the new composition will be
displayed on the viewfinder LCD. This function
can be used to see if an object of very different
brightness levels can be properly captured.
Shooting with the AE lock function is useful in cases where the desired focal point
differs from where the focal point is usually measured, or when it is necessary to
measure the exposure using spot metering in order to bring the desired subject into
focus.
The AEL button will lock the Auto-exposure value as the photo is being recomposed.
AE Lock Mode
1. Turn the exposure mode setting dial and
select “ P ”, “ Av ” or “ T ”.
2. Focus on the subject for metering exposure,
and press the AEL button on the rear of the
grip. will appear on the viewfinder LCD,
indicating that the exposure value is locked.
3. Move the camera to recompose the shot,
then take the picture.
4. By pressing the AEL button , AE lock will
be cancelled.
on the viewfinder LCD blinks to
indicate the exposure is locked, when you
continue to take the next picture in the AE
lock mode.
If you turn the shutter release mode selector
lever to the “L” (power OFF) position, or
after a lapse of one hour, the AE lock mode
will automatically be cancelled.
In the Manual “M” exposure mode, you
cannot use the AE lock function.
When the exposure metering value
difference display appears, press AEL button
for about 1 second. The one-push shift
function is now activated to shift to the
shutter speed based on the metered result.
(page 50)
If the difference between the set value and the metered value exceeds 6EV, the
viewfinder LCD blinks “ – u – ” for underexposure and “ – o – ” for overexposure.
1. The way to cancel the AE lock can be changed.
Custom settings (C-11 on page 85)
2. Half-pressing of he shutter release button can activate the AE lock mode.
Custom settings (C-10 on page 85)
3. The assignment of the AEL button and AFL button can be swapped.
Custom settings (C-09 on page 85)
By turning the front or rear dial in the AE lock mode, you can change the
aperture and shutter speed value without changing the exposure value that is
set when entered into AE lock mode.
In the “
P ” mode (Program AE) mode, turning either the front or rear dial shifts
the program to “P
H
” and “P
L
.” When in “ Av ” (Aperture priority AE) or “ Tv ”
(Shutter priority AE), turning one of the dials changes both the aperture and
shutter speed values.
Exposure compensation and auto bracketing function can be used when the
camera is in the AE lock mode in normal operation or with the mirror locked
up.