Sounds like an application for T-10 w/cross-polariser.
George
Skewes Alexandra M wrote:
> Hi:
>
> I am new to the list and I would appreciate some help.
>
> Does anybody know which is a good flash for macrophotography for Olympus
> 35 mm cameras? I have an OM-1; OM-2 and an OM2S and a Zuiko 50 /3.5 macro
> lens. My subjects are rocks and minerals, some of which are metallic and
> others are not but in many cases they reflect a lot of light back to the
> lens. I normally take my pictures outdoors and use a polarizer in front of
> the lens, but this alone does not work with some of my rocks. I need to
> polarize the light source. Can I do this with any flash? Also what are the
> differences between the T8 reverse-reflection ring flash, T10 ring flash,
> T32, and T28 dual-head macro flash?
>
> Any suggestions?
>
> Is there any literature on rocks and minerals macrophotography?
>
> Alex
>
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