645adf3-e3.ps, Exposure metering modes, Exposure warnings – Mamiya 645 AFD III User Manual

Page 32: Exposure metering modes exposure warnings, How to select an exposure mode

Advertising
background image

P

Av

Tv

M

X

CF

A

B

2. Press the SET button or exposure metering
mode button A to enter the setting.

Exposure metering is performed after automatically
selecting average/spot exposure metering.
• Depending on the subject conditions, center-
weighted average/spot exposure metering is selected
automatically, and the correct exposure is measured.
• Spot exposure metering is automatically selected
when the brightness of the spot exposure metering
range becomes darker than the brightness of the
entire screen.
• If there is very little difference between the spot
exposure metering value and center-weighted aver-
age exposure metering value, the correct exposure
level is obtained as the intermediate value.

The average brightness of the entire screen is mea-
sured, emphasizing the center of the screen.

The brightness of an area equivalent to 7.6% at
screen center is measured, and the exposure is de-
termined. The circle at screen center serves as a
general guideline. This mode is suited to measuring
subjects with strong contrasts or measuring only
screen portions.

Average/spot auto
exposure metering

Center-weighted aver-
age/spot exposure
metering

Center spot exposure
metering

Exposure Metering Modes

Exposure warnings

With an inappropriate exposure setting, when shooting subjects that are too light or
dark, the user is warned by the flashing external LCD or the LCD inside the viewfinder.
At such times, the correct exposure cannot be obtained.

Warnings that the exposure is outside the metering range

Program AE (P)

The shutter speed and f-number blink.

Aperture priority AE (Av)

The shutter speed blinks.

Shutter priority AE (Tv)

The f-number blinks.

Manual mode (M)

The exposure metering value difference is displayed.

The time used for the metering timer can be changed.

Custom settings (C-04 on page 93)

How to select an exposure mode

1. Exposure mode mark is displayed when the
exposure mode button A is pressed. Since three
different exposure modes are displayed sequen-
tially when either the front or rear dial is turned,
select an appropriate exposure mode.

There are three exposure metering mode to select a proper exposure modes appropri-
ate to the lighting condition of subject.

61

62

Exposure Metering Modes

Exposure Metering Modes

/ Exposure warnings

Important

When a polarizing filter is used, ensure that a circular polarizing filter

(circular filter: C-PL) is used. The correct exposure cannot be obtained
with a normal polarizing filter (PL).

Advertising