On 6/26/07, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>
> Lens structure appears identical to the Oly except that the Oly has a
> simplified rear group... 3 elements instead of 4. I assume that's
> because it only has to cover a 4/3 sensor instead of an APS size sensor
> as the Sigma does. Both lenses have identical aperture ranges, 9 blade
> diaphragms and 58mm filters.
Anybody have any doubt about who makes
> this lens?
Nope. It's good to see Oly getting out there with their lenses under the
Sigma brand - and competing in the APS sensor market too!
Jez
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