Mamiya 645 AFD III User Manual download pdf (Page 34)

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Metered-value difference indicator

Keep pressing the AEL button A, and the differ-

ence between the metered exposure value and

the exposure of the new composition will be dis-

played on the viewfinder LCD. This function can

be used to see if an object of very different bright-

ness levels can be properly photographed.

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 shutter release mode selector lever

to “S” or “C.”

2. Turn the exposure mode setting dial and

select “P,” “Av ,” or “T”.

3. Focus on the subject for metering exposure,

and press the AEL button A on the rear of the

grip. will appear on the viewfinder LCD,

indicating that the exposure value is locked.

4. Move the camera to recompose the shot, then

take the picture.

★ on the viewfinder LCD blinks to indi-

cate the exposure is locked, when you con-

tinue 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 differ-

ence 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 59)

★ If the difference between the set value and the metered value exceeds 6EV, the

viewfinder LCD blinks “– u –” for underexposure and “– o – ” for overexposure.

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 “PH” and “PL.” 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.

1. The way to cancel the AE lock can be changed.

Custom settings (C-17 on page 94)

2. Half-pressing of he shutter release button can activate the AE lock

mode. Custom settings (C-16 on page 94)

3. The assignment of the AEL button and AFL button can be swapped.

Custom settings (C-15 on page 94)

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Mamiya 645 AFD III User Manual Page 34

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