At 8/15/2014 06:00 PM, Chris Trask wrote:
>>
>>>The big problem in photographing the eye is reflections. Obviously,
>>>just the reflection of the light source in the surface of the eye. But
>>>if the lightsource is too on-axis, you get a lot of reflection off of
>>>the retina itself.
>>
>>I have not followed the whole thread but if reflection is the issue
>>then cross-polarization is the way I have dealt with it in the past.
>>Namely the light source is polarized one way, and the lens polarizer
>>is 90 degrees (cross) from that, which will eliminate reflections.
>>The downside is that it reduces the light a lot so proper metering
>>is important.
>>
>
> Hmmmm.... I had not thought of that. How do you go about polarizine the
> light? Obviously you use a polarizing filter at the source, but where do you
> get one?
You can buy sheets of polarized plastic to put over the light source.
However, if you try putting it over a flash unit, the flash will burn it
out. So if using flash, you need to have a lot of separation from the
flash unit.
Search BH photo with Polarized Sheets.
Wayne S
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|