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?
Chuck Norcutt
Jeff Keller wrote:
> Look at the Sigma APO. It shows 3 ELD elements
> <http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3303&navigator=3>
>
> Thanks for pointing it out.
>
> -jeff
>
> On 6/26/07, Daniel Sepke <daniel.sepke@xxxxxxxxx> wrote:
>> Interesting to see the Oly cross section versus the Sigma lens that this is
>> apparently based on. The Sigma site shows only one ELD element whereas the
>> Oly site shows three. Sigma are not making their version in the FT mount so
>> a comparison of real world performance is not possible.
>>
>> Thanks for the heads up Winsor.
>>
>> Dan S.
>>
>> -----Original Message-----
>> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
>> Of Winsor Crosby
>> Subject: [OM] New Oly Lens Announced
>>
>> http://www.dpreview.com/news/0706/07062601zuiko70300.asp
>>
>> Winsor
>
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