Mark,
I have photographed highly reflective surfaces myself with great success
using the Olympus T10 flash with the Ring-Cross polarizer and my 90mm f2
Macro. The ring-cross polarizer pretty much eliminates reflections,
although it does cut down the flash power by at least 3-4 stops (no
Kodachrome 25, I'm sorry to say!). But if you don't need too much depth
of field and can get by at f 5.6 or f8 then it will work well with K200
or one of the many 100 speed E6 films.
If you have access to the T10 and the ring-cross I would try that,
otherwise you might be able to get a standard polarizer to work somehow
using natural light. I suspect you need a lens-mounted flash to get
decent illumination of the highly reflective surface, as you mentioned.
Info on the T10 can be found at:
http://members.xoom.com/_XMCM/veluwen/om-sif/flashphotogroup/t10.htm
- marc
Date: Fri, 26 May 2000 13:20:38 +1000
From: Mark Staiger <Mark.Staiger@xxxxxxxxxxxxxxxxx>
Subject: [OM] photographing polished metal- HELP!
Dear Zuiks, I apologise this is not a zuik related
posting but I am desperate for a solution to
something I need to do for my PhD. I would like to
be able to photograph/video the surface of steel
that is highly reflective, actually
electro-polished. The area is about 6.7 mm wide
and
20 mm long, also cylindrical. Using video is very
difficult because the surface just appears black
as there is no light reflected back into the lens
on account of the surface being so smooth and
round. Can I use my oly gear to get an image of
this surface? I can normally view the surface
through a microscope because the light comes from
the lens and not the side but how else can I get
the lighting required?
Any tips would be really appreciated,
Mark
Melbourne
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