As a practical guideline, use the DoF markings on the lens as a guide.
If you expect to enlarge a lot, use the markings for a wider aperture.
E.G., if you expect to make a huge print from a photo at f/8, use the DoF
markings for f/4 - or less. This is especially important for hyperfocal
photographs since there is often very fine detail on the horizon.
Does anyone know what Circle of Confusion Olympus used for its lenses'
markings?
tOM
------------------- http://groups.yahoo.com/group/ottawa-
photo-clubs
tOM A. Trottier, ICQ:57647974 http://abacurial.com
758 Albert St, Ottawa ON Canada K1R 7V8
+1 613 860-6633 fax:231-6115 N45.412
W75.714
"The moment one gives close attention to anything,
even a blade of grass, it becomes a mysterious,
awesome, indescribably magnificent world in itself --
Henry Miller, 1891-1980
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