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Old 19-08-2008, 08:16 AM
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Liz is offline
Join Date: Aug 2007
Location: Beautiful SE Tassie
Posts: 4,734
Inner focusing system

Hi all

Looking at buying another 'longer' lens for 450D, as are quite a few others by the looks .... alas budget wont make it for the L series, but seem to be a few around for about $500. Some lens are quoting an inner focusing system, would this suit astrophotography?? (camera on tripod setup) Dont you need to focus?
This is an example

Have searched on IIS, and some some good data already, but this focusing thing had me wondering.

Thanks in advance.
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