Canon A-1 Instructions Manual page 46

Not For Resale – Free Download at http://www.joe-chan.com/manuals
Meter Coupling Range
When using the FD 50mm f/1.4 lens and
ASA 100 film, the built-in exposure meter
couples within a range of EV -2 (f/1.4 at
AE Range of Silicon Photocell at Various ASAs
8 sec.) to EV 18 (f/16 at 1/1000 sec.)
FD 50mm f/1.4 Lens
AE Coupling Range
At given film speeds, the built-in exposure
meter couples with the aperture and shutter
speed as indicated in the chart below.
Outside the coupling range, the camera
warns you by flashing the photographic data
inside the viewfinder.
–46–