At 03:04 PM 2/25/2001 +0100, you wrote:
> Wide angles have a small depth of focus? HUH?
> Wide angle lenses have inherently large DOF last I checked.
Depth of field is determined by image size. Wide angle lenses tend to
exhibit greater depth of field because often images are smaller. If you set
a 20mm lens and a 200mm lens to f/8 and set them both so each frames you
exactly from head to toe, depth of field will be the same. OTOH, if both
lenses are the same distance from the subject so the 20mm lens frames the
subject from head-to-toe and the 200mm lens frames the subject from head to
chin, the wide angle lens will exhibit greater depth-of-field.
regards,
Henry Posner/B&H Photo-Video
http://www.bhphotovideo.com
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