I'm sure you're correct that it's the Sigma lens. The specs are too
close to be otherwise. The third party lens producers have got to have
some sort of specification edge over the OEM's. Could be that the focal
length difference is the "edge" for Sigma. Could also be that Olympus
spec'd it that way to avoid more performance fall off at the long end.
Chuck Norcutt
Hans van Veluwen wrote:
>
> I think this lens is based on the design of the Sigma 18-200mm/F3.5-6.3
> DC.
>
> Just look at the amazing similarities in the specifications:
>
> http://www.olympus-esystem.com/dea/products/lens/18-180_35-63/index.html
>
> http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3302&navigato
> r=6
>
>
> Both lenses have 15 elements in 13 groups, including 2 ED elements
> (Sigma calls them SLD) and two aspherical elements in an identical
> architecture.
>
> Both have a filter size of 62mm, 7 aperture blades and a closest
> focusing distance of 45 cm.
>
> Odd is the 20mm difference of the longest focal length.
>
> The Sigma lens is not available in 4/3 mount, but last year it was
> promised to be so. When I ordered my E-300 from TechnikDirekt.de it was
> advertised as a kit with this Sigma, but after a while I got the message
> that this lens 'was no longer available' and they sent me the Sigma
> 18-125mm/F3.5-4.5 instead with a reduced kit price (without even
> consulting me if this alternative would me ok with me).
>
> I wonder if Olympus made a deal with Sigma...
>
>
>
> Hans
> ==============================================
> List usage info: http://www.zuikoholic.com
> List nannies: olympusadmin@xxxxxxxxxx
> ==============================================
>
>
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|