Practical Hints
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8. Depth of field
The image of a subject is sufficiently sharp over a range of distances in front of and behind the focused distance. This depth of field zone is shown on the depth of field scale 3:
Look up the marks of the aperture in use to each side of the focusing index The figures on the distance ring 22 opposite these marks then indicate the sharply covered subject range
Depth of field is particularly desirable for candid snapshots, sports photography with rapidly changing subject distances, and for scenes extending in depth. For this reason the most useful snapshot settings of 6 and
20 feet (or 2 and 6 at meter scale) are marked in red on the distance ring 22. At a medium aperture (f/8 to f/11) these settings provide extended focusing ranges:
Scale at | Distance range in focus |
6 feet | from about 4'l/2" to 9 feet |
(2 m) | ( from about 1.5m to 3m) |
20 feet | from about 10 feet to infinity |
(6 m) | (from about 3m to infinity) |
For distant views with near foregrounds set the infinity marking "oo" opposite the aperture in use on scale 3. That extends the depth of field to the nearest possible point in the foreground.
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All this informations, texts, and Images were extracted from the "Rollei 35/35T/35S In Practical Use" and only intends to give some orientation to new users that didn't had access to the original manual. (c)
