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re: filmscanners: re: filmscanners: 2700ppi a limiting factor in sharpness
At the risk of stating the obvious, to reach the limits of your lens
resolving power you must either select a fast shutter speed or use a tripod,
otherwise the image will be somewhat soft due to camera shake. Even then
problems can arise from mirror slap and shutter vibration when the exposure
is ~1/15 second.
The difference between a good and a mediocre lens is obvious in a 12x8
enlargement which is easily within reach of a 2700 DPI scanner. So the 4000
DPI scanner will only make a difference if a) you have a good lens, b) you
avoid camera vibration, and c) you use a fine grain film such as Fuji Sensia
100.
Leif.
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L.S. Goodwin - S/W Engineer Email: lgoodwin@racalinst.co.uk
Thales Instruments Ltd. Tel: +44 (0) 1628 604455 ext 290
480 Bath Road Tel: 07754 006 473 (Mobile- BT CellNet)
Burnham Fax: +44 (0) 1628 662017
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England
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