Here is the first of a couple of SQF test charts I did up this evening. The
charts are best viewed with font set to Courier New. I'll post them to the
WWW site: http://members.aol.com/olympusom/lenstests/default.htm
when I'm done with them all.
The 200mm f/5 with Olympus 2X teleconverter shows good contrast at f/16 at the
expense of lower resolution; remarkable lack of distortion. Poor results are
perhaps the reason Olympus dropped the 200mm f/5 as a recommended combination
with the 2X Teleconverter (besides it getting discountinued). Nearly
impossible to focus (a "Hail Mary" operation) even with a Varimagnifinder and
a 1-8 screen! Clearly an emergency combination only and then only at f/16.
*****
200mm f/5 Zuiko (multi-coated) with Olympus 2X Teleconverter
Vignetting = B
Distortion = None!
Aperture Center Corner
f/5 (10) F F
f/8 (16) D- D-
f/11 (22) C C
f/16 (32) B- B-
f/22 (44) C+ C
f/32 (64) D+ D
Gary Reese
Las Vegas, NV
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