Jostein's words:
Hi Luiz,
My experience so far does not cover your alternatives, but I dare a
comment
anyway.
I would suggest you find a manual focus mirror tele lens to try out
first
since it's the cheapest option and since it probably is easier to sell
again
if it proves to be the wrong choice.
I've done a couple of astrophotos with the K-5 and the O-GPS-1, and
can
vouch for its convenience. But then again I'm a noob at astrophoto...
:-)
Jostein
Glad you mention it, Jostein... been wondering about wich 500mm tele
would you use in this scenario. The "selling a failure" idea is very
interesting indeed - the fact some lens didn't work for me does not mean
it won't be useful somewhere else. Come to think of it, the 500 mirror
is probably easier to arrive safely and cheaper to ship... hmmm... I
think I saw some 500mm f/6- somewhere.
lf
--
luiz felipe
luiz.felipe at luizfelipe.fot.br
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