Pentax 645 645 Manual - Page 39
speed/aperture
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III_:11: 1:1 I LI 3. After turning on the main switch, the LED displays of the shutter speed and f/stop will visually appear within the viewfinder by a slight depressing of the shutter release button; additional pressure upon the shutter will cause the same to release for shooting. Visual warnings during Aperture-priority AE control: The following indication will manifest itself within the viewfinder if the given photographic situation exceeds the shutter/aperture coupling range. The shutter speed will appear as follows: 1.00 • - IJ 4141 1y5"e jI-* s15" ' (flow-like flickering) If the maximum aperture (f/2.8, etc.) appears, it should be reset by moving the same toward the direction of the minimum aperture (f/22, etc.). The process should be reversed in the similar manner, when the displayed value is the minimum aperture (f/22, etc.) by changing the aperture in the direction of maximum aperture. Should the situation return to normal, that is, within the shutter/aperture coupling range by changing the f/stop, the flow-like flickering will cease and proper exposure is indicated and photographs may be taken in this AE mode. Whenever the situation exceeds the meter coupling range for proper exposure, the following shutter speed/aperture value indications will appear: 1f0e.2ee reo:": I 2FO"B Ih = f2L-' (flow-like flickering) (Please refer to the section concerning "Beyond meter coupling range", page 27.) 37