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[OM] Re: Sigma 55-200mm vs Zuiko 50-200mm

Subject: [OM] Re: Sigma 55-200mm vs Zuiko 50-200mm
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Fri, 25 Aug 2006 07:45:55 -0400
Thanks.  Don't know how I missed that as I looked at the Oly link.  Not 
enough coffee yet I guess.  Well, anyhow Tim got a lesson in constant 
aperture zooms, weight considerations and potential problems with small 
apertures.  :-)

Chuck Norcutt

Bernard Frangoulis wrote:

>>One thing to note on the Sigma is that it is not a constant aperture
>>lens like the ZD.
> 
> No, the ZD 50-200mm is f/2.8-3.5 (otherwise it would be much bigger), and the 
> ZD 40-150mm is f/3.5-4.5.
> 
> Bernard



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