FUJICA AX-3 Owner's Manual page 15

3. PROCEDURE FOR TAKING AUTOMATIC EXPOSURE PICTURES
1. Set the Shutter Speed Selector to AE or AEL.
2. Use any aperture you want; that is, if your lens is an X-Fujinon 1:1.6
50 mm DM, set the Aperture Ring to any one of the f-numbers from F1.6 to
16.
3. Look through the Viewfinder and press the Shutter Release halfway down.
An LED will turn on in the left side of the Viewfinder to show you the
shutter speed that will precisely suit the preset aperture and subject
brightness to yield a correctly exposed picture.
For example, if the aperture you selected is F5.6 and the shutter speed
coupled to it by the camera is 1/250 sec., the LED opposite the number 250
will turn on.
4. Over and underexposure warning
If the aperture you selected is not compatible with the camera's shutter
speed range, that is, if it is too large and needs a shutter speed that is
faster than 1/1000 sec., the red LED opposite the number 1000 will turn on
and blink (8 times a second) to warn you that your picture will be
overexposed; and if it is too small and needs a shutter speed that is
slower than 2 seconds, the red LED opposite 2S will turn on and blink
(also 8 times a second) to warn you that your picture will be under-
exposed.
5. Guarding against camera shake.
If you are taking a dimly-lit subject, the camera may provide a shutter
speed that is slower than 1/30 sec. for the aperture you selected, in
which case you will have to guard against camera shake by mounting the
camera on a tripod or using something firm to support it, such as a table
or the top of a chair.