The list of lenses I supplied to photodo as a good sample of ones to test
consisted of:
21/2, 21/3.5, 24/2, 24/2.8, 28/2, 28/2.8, 35/2, 35/2.8, 50/1.8, 50/1.2,
50/3.5 macro, 50/2 macro, 90/2 macro, 100/2.8, 100/2, 180/2.8, 200/4, 300/4.5,
and 600/6.5.
it could only consist of lenses still sold by Olympus as new,
so the 50/1.4 wasn't possible to include.
whether they can test them all or not depends on what Olympus Hamburg
is willing to loan them. the 21/2 and 21/3.5 might not be in O.H.'s stock
for example. honestly, I don't know how that will play out.
on the subject of the 50/1.4, there were at least two different optical
formulas manufactured by Olympus for this lens, and only the latest
one rivals the 50/1.8's for sharpness. Unfortunately, it isn't easy
to tell which you are getting when you purchase one, so this lens can
be a hassle to buy. some are single-coated and some are multicoated,
but the less desirable version was sold both multi and single coated,
so finding one that is multicoated is not sufficient to guarantee getting
the latest rendition.
this has been covered before, but the best way to tell if a Zuiko is
multicoated is to hold it under a light fixture and note the sequence of
colors of the reflections of the light fixture. if there is any green or
blue, it is multicoated. if only purple and amber/sand show up, it is
single coated. note that early multicoated Zuikos may not have all elements
multicoated, but only interior ones that could reflect light back in the
wrong direction. for instance, I have a 50/1.8 marked Zuiko MC and the
rear element is single-coated (others are multicoated). of course, it
is as contrasty as later multicoated 50's, so this isn't something to
lose sleep over.
Cheers,
Joseph
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