Archived posting to the Leica Users Group, 2001/10/13
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>For filters on the 15mm you can either hold a 77mm or so tight to the hood
>of use some Roscoe gels on the back side of the lens. Don't laugh, it works
>either way.
>
>Don Dory
>dorysrus@mindspring.com
>
The problem with the filter in front is that reflections off the
_back_ of the filter can sneak onto the image, just like shooting
through a window when the light behind you is as strong or stronger
than the light in front of you.
Roscoe 'gels' are often not gels, but polyester, which is not good
optically, and the thickness is often too great. Make sure you get
real gels that are optically OK. You can get Lee gels, or Kodak gels
(lots of stores still have some kicking around) and cut them and
stick them to the back of the lens.
- --
* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:henningw@archiphoto.com
|[ ]| http://www.archiphoto.com
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