Canon EOS 1 Instructions Manual page 54

Aperture-priority AE [Av]
Aperture Value Display
Apertures are set in 1/3-stop increments. Larger numbers indicate smaller lens apertures.
The following aperture settings are provided in the camera, but the actual aperture range
available depends on the lens in use.
1.0 1.1 1.2 1.4 1.6 1.8 2.0 2.2 2.5 2.8 3.2 3.5 4.0 4.5 5.0 5.6 6.3 7.1
8.0 9.0 10 11 13 14 16 18 20 22 25 29 32 36 40 45 51 57 64 72
81 91
Custom Function
(Refer to pages 86–87)
Using a large aperture
54
In addition to 1/3-stop increments, aper-
ture values can also be input in 1-stop or
1/2-stop increments. In these cases,
available aperture values are as follows:
• 1-stop increments
1.0 1.4 2.0 2.8 4.0 5.6 8.0 11 16
22 32 45 64 91
• 1/2-stop increments
1.0 1.2 1.4 1.8 2.0 2.5 2.8 3.5 4.0
4.5 5.6 6.7 8.0 9.5 11 13 16 19
22 27 32 38 45 54 64 76 91
Using a small aperture