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Can anyone comment on either of these 2 lenses please. I know
you shouldn't use zoom lenses for astrophotography, but one of them has a zoom
lock. The other I think I could tape down. The least expensive one is a 170-500
and the other one with the zoom lock is a 50-500.
With the soft economy in the Metro Detroit
area, I just can't afford to get a bunch of long telephotos for extended objects
so I'm looking for something that will be more versitile. Plus they want your
first born for a Nikor!
Thanks, Jim Ives
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