Chuck Norcutt wrote:
> This reminds me that I have an Orion 500mm f/5.6 mirror lens/spotting
> scope that I've almost never used......
> so maybe I'll give this lens a whirl again. At f/5.6 I may actually be
> able to focus it.
>
I sure hope so, because DOF is going to be 'interesting'.
I think all those 500-600/8 lenses are f8 not just because of size and
cost, but for DOF reasons.
Have fun and let us know, maybe even, gasp, post some samples. :-)
Moose
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