Mamiya 645DF - EXPOSURE WARNINGS; Out-of-Range Exposure Indicators; Polarizing Filter Usage Guidance

Chapter 1 - Basic info
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Chapter 6 - Exposure 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
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).
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.