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

[Bernard Frangoulis]

>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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