"Ron" <nomail@home.net> wrote in message

news:1IlMb.8818$wf1.7633@edtnps89...

> "Ben" <crescent_au@yahoo.com> wrote in message

> news:d99e1341.0401101828.40caece6@posting.google.com...

> > I've heard (but haven't tried myself) that using red filter

> > with b&w photos can create quite dramatic effects as it increases

> > contrast to the photo.

> A yellow filter on the camera works to increase intensity with black and

> white shots.

Ummm, that is what the filter sales lit. wants people to believe.

Do a test. Shoot the identical real subjects (not color swatches)

with and without a light yellow and a medium yellow on the

lens. Keep everything identical. Use the exposure settings

W/O the filters, then apply the filter-factor specified for the

particular filter (TTL meters have too much color error to be

correct). Compare the results *on a contact print* where printing

differences will be minimal. I don't think you will see any

differences. With a dark yellow filter (1-stop FF) on a VERY

clear day with sky showing, you *may* see a slight difference.

Most weak filters just rob you of some effective film sensitivity,

and contribute nothing to the image...

--

David Ruether

d_ruether@hotmail.com

http://www.David-Ruether-Photography.com