Mamiya 645 AF ユーザーズマニュアル

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Program AE (P) 
The aperture and shutter speed are determined automatically for the optimum exposure, 
according to the existing ambient light. This mode is best suited for general photography, 
allowing the user freedom to concentrate on the subject. 
Turn the exposure mode setting dial and set it to 
"P" (program AE). 
 
*In the "X" exposure mode the lock function 
is activated. Press the exposure mode dial 
lock release button while turning the 
exposure mode setting dial. 
Shifting the Program 
Use "PL” to record subjects with depth using a smaller aperture (landscapes, etc.), 
"PH" to record moving subjects with a high shutter speed. 
Turn the front or rear dial to shift the shutter speed 
between the +1.0 EV high speed side "PH" and 
-1.0 EV low speed side "PL". 
PL =Program Low / slower (low) shutter speeds 
PH= Program High / faster (high) shutter speeds 
*If the aperture flashes on the main LCD and in 
the viewfinder display when the program is 
shifted, the proper exposure cannot be 
achieved. Please select a different Program 
mode. 
When the Program mode is shifted, the 
aperture changes along with the shutter speed 
to maintain the proper exposure. 
Aperture Priority AE 
Set the desired aperture and the camera selects the optimum shutter speed 
accordingly. Use the Av mode to maintain specific control over depth of field, i.e. taking 
portraits or landscapes. 
1. Turn the exposure mode setting dial and set it 
to "Av" (aperture priority AE). 
 
 
In the "X" exposure mode the lock function 
is activated. Press the exposure mode dial 
lock release button while turning the 
exposure mode setting dial. 
2. Turn the front or rear dial to set the desired 
aperture. 
The aperture value is adjusted in 1/2 stop 
increments. 
*The shutter speed value on the main LCD and in the viewfinder display will 
flash when photographing objects that are too bright or too dark for proper 
exposure. The proper exposure cannot be achieved at the present settings. 
Change the aperture value by turning the front or rear dial until the shutter 
speed value stops flashing and remains lit. 
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