Comments follow:
55mm f/1.2 Zuiko (single-coated)
Vignetting = B@f/1.2, A-@f/2
Distortion = slight barrel
Aperture Center Corner
f/1.2 C+ B-
f/2 B B-
f/2.8 B- B
f/4 B+ B+
f/5.6 B+ A-
f/8 A- A
f/11 A- A-
f/16 A- A-
Note: Very even performance across apertures, makes this a good choice as a
general purpose normal lens. Moderate contrast with high resolution, except
very low contrast at f/1.2. Low levels of vignetting are remarkable.
Predominately yellow lens coating seems primitive by modern standards.
For those into the 55mm fast wide angles, this makes a smart choice, although
the 50mm f/2 does too. The big question mark is flare and I'll try and do a
comparison of flare in some 50mm lenses and the infamous "low flare" 35mm f/2
Zuiko. Very usable at f/2 and f/2.8. I can't explain the SQF value drop in
the center at f/2.8, even though I double-checked it. Given its bad rap, I'd
have to call this lens a "sleeper." I like it.
Gary Reese
Las Vegas, NV
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