Canon EX AUTO - Page 27

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50mm Lens fl8
Depth - of -f ield 2. 3m-4 . 3m (8' - 14')
Focused at 3m (10' )
50mm
a.- f/16
Depth-of-field 1. 9m - 7. 6M (6' - 25')
Focused at 3m (10')
Depth-of-Field Scale
The depth-of-field scale which is applicable when using the
SOmm standard lens, indicates the range of subjects which
will be in focus sharply on the film . This range will vary
with the following factors : The depth-of - field will be
deeper the smaller the aperture opening, the further the
distance of the subject, and/or the shorter the lens focal
length.
The depth-of-field will be shallower the larger the
aperture opening, the nearer the distance of the subject,
a.
nd/or the longer the lens focal length. For example, if
the SOmm standard lens is . used and the subject has been
focused at a distance of 3m (10'), with an f/8 aperture value
read off from both indexes on either side of the indicator
(orange line), the depth - of - field is from approximately 2. 3m
(8 ') to 4.3m (14') . If the aperture is closed down to i/16,
the picture will become sharp between 1.9m (6') to 7.6m
(2S') from the camera. This range will vary with the f/stop
selected.
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