(Extracted from an article in UK photo magazine "Practical Photography"; the
issue is not known, but was probably sometime during 1990. The article
reviewed the OM4Ti plus 3 lenses.)
Slower than many 70-210mm lenses, this one-touch zoom has that much more
focal length versatility, and can double as a (rather bulky) standard lens
if it has to.
f32 is fairly weak, especially at 250mm, but if you forget about this
aperture entirely you have a good all-round performer, especially good at
50mm f11.
MTF % values for centre and edge (edge in parenthesis)
(the spatial frequency measured was not specified):
f5: 55% (47%)
f8: 61% (37%)
f11: 62% (45%)
f16: 57% (45%)
f22: 44% (38%)
f32: 22% (18%)
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|