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Ric,
I have all those lenses,
except the 90mm and 200 mm. In addition, I have the more recent 55 mm
f/4. I just took some astronomical test shots of all my lenses: 45 mm f/4,
55 mm f/4, 75 mm f/2.8 AL, 105 mm f/2.4, 165 mm f/2.8, and 300 mm f/4
EDIF. I should get the results back by the middle of this
week. I'll let you know which of the one's you mentioned performed the
best and at which f-stop. In addition, I'm hoping I have a few nice Comet
Bradfield shots. Even if I do, it will probably be at least a month before
they are scanned, and ready for public display. Here's a few shots taken
several years ago of Comet Ikeya-Zhang with a few of the lenses you are
interested in.
In addition, the aurora
shots and a few others were taken with the Pentax
setup. Wade
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