View Single Post
      09-24-2011, 07:20 PM   #1607
dcstep
Major General
United_States
1291
Rep
7,389
Posts

Drives: '09 Cpe Silverstone FR 6MT
Join Date: Nov 2008
Location: Colorado

iTrader: (0)

Garage List
2009 M3  [8.40]
Quote:
Originally Posted by scollins View Post
But I doubt it will autofocus quickly or reliably with a 2X, since that would be f11. Maybe in a very bright setting, but I bet it would still be slow.

But for something moving very slowly (like the moon..) it would work ok
With the 1D and the 1Ds it's not horrible in decent light, but you can only use the center AF point.

Dave
__________________
Appreciate 0