[OM] Re: Disappointing 4/3 system and DZ lenses

[Chuck Norcutt]

f/5.6 is the limit specified by Canon for autofocus to work so it's on 
the edge if the light isn't good.

Chuck Norcutt

Garth Wood wrote:
> Just went over to Sigma's site and poked around.
> 
> I believe the lens my buddy uses for birding is the APO 300-800 F5.6 EX 
> DG HSM, otherwise known as the shoulder-fired missile launcher.  ;-)
> 
> 
> Garth
> 
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