In article <19970718064401.CAA04057@ladder01.news.aol.com>, drdgl@aol.com says...

>I've been doing some reading about filters and thought about a situation
>where I might use three filters. Let's say I wanted to take some
>flattering photos of very pale skinned, wrinkled, elderly people in or
>near a swimming pool at midday. I would want use a warming filter (81a or
>81b) to add color to the skin tone. I would want to use a polarizing
>filter to take care of the reflection on the water, and I would want to
>use a soft focus to smooth the skin. Throw in the UV filter and that's
>four filters. The Kodak book on filters says that screw on filters should
>never been combined or "stacked." My questions are 1) is Kodak right?
>That is, is stacking OK? and 2) If stacking is not OK, how would I take
>this photo without stacking filters?

Hmmm..., almost never say "never"...;-)
I think if you are using a long enough lens to avoid vignetting
problems with the thick set of filters, and there are no bright
spots in the subject to cause reflection problems with the multiple
parallel surfaces, and one of your requirements is for a softening
effect, go ahead and stack - though I would normally advise against
it... (BTW, the UV filter is not needed - all that glass in itself
[especially if part of it is a warming filter], combined with a
[probably] multi-element lens, should let very little UV through...).
(Also BTW, there are such things as warming polarizers, and soft-focus
lenses, if you absolutely want to reduce the filter count to one...;-)
Hope This Helps
(David Ruether - http://www.fcinet.com/ruether )