On Tue, 3 Mar 1998 15:37:55 -0500 (EST), "John A. Prosper"
<prosper@xxxxxxxxxxxxxxxxx> wrote:
>
>At the time I bought achromat diopters, only Nikon was
>making diopters optimized for telephoto lenses. I
>understand that Canon now offers tele-optimized achromat
>diopters as well. I don't know if Minolta is doing this; I
>DO know that they offer achromat diopters for standard
>lenses, and I have bought one of these for my Zuiko 50/1.8.
>
John, maybe you don't know but Olympus now makes them too!
Both the IS-B macro H.Q. converter (f=40cm or 2.5 diopters, 55mm
thread) and the IS A-lifesize macro H.Q (f=13cm or 7.5 diopters, 49mm
thread) work very well in the complete focal range of the IS-cameras
they are meant for (starting at 35mm and going up to 180 and 135mm
respectively). They are high quality achromats.
Frank van Lindert
Utrecht NL.
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