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Old 19-12-2008, 05:08 PM
Ian Robinson
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Ian Robinson is offline
Join Date: Jan 2007
Location: Gateshead
Posts: 2,205
Originally Posted by aokman View Post
The 70-200 F2.8L IS is definately a nice lens i use it for most my photography and im planning on a teleconverter soon...if yours is dedicated for astronomy stuff though you might want to consider a 400mm prime F5.6 its a bit cheaper and id say it will be sharper than a L zoom lens with a 2 x converter

But hey a 2 x teleconverter might not be that bad if your using a crop body
Mine will be a general lens , not just for astroimaging.

Will be pretty handy on my 40D (which is "a cropbody").

Last edited by Ian Robinson; 19-12-2008 at 10:00 PM.
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