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shutter speed. If your lens has a smaller minimum aperture, exposure will be correct.
Outside the Meter Coupling Range
When the light level is so low that it would be outside the meter coupling range regardless of the shutter speed you set, the set shutter speed will flash on and off along with the aperture in the viewfinder. When the light level is too high, a small aperture will flash on and off even when the AT dial is set to the highest shutter speed. In these cases, shooting in the shutter priority
AE mode is only possible if you can change the light level accordingly or switch to a more appropriate film.
2. In aperture priority AE mode
When exposure is incorrect, the LED digital readout for shutter speed flashes on and off.
When the highest shutter speed of 1000 flashes in the viewfinder to indicate over- exposure, turn the AT dial to a smaller aperture. When a shutter speed of the slow range flashes in the viewfinder to indicate underexposure, turn the AT dial to a larger aperture. The shutter speed value that flashes to indicate underexposure depends on the speed (maximum aperture) of the lens and ASA film speed.
As in the shutter priority AE mode, when the light level is too low, both shutter speed and aperture data will flash on and off to indicate that no matter what aperture you set, the meter will not couple in an AE mode. When the light level is too high, the shutter speed will flash on and off even when the AT dial is set to the minimum aperture possible. Again, AE photography is still possible if you change the light level or switch to a more appropriate film.