Well far be it from me to interrupt someone else's argument but here we have
one of the greatest research tools, the Internet and no one has looked for
the answer, except for me. The following information comes from the Kodak
Black & White 400+ web page:
If your camera will allow you to place a filter over the
lens, you can use the same effect-enhancing filters used
for conventional black-and-white films with very similar results.
For example, use a yellow or red filter to darken a blue
sky and emphasize clouds, or use a green filter to accentuate
red lips in a portrait. Since filters absorb some light that
would otherwise reach the film, the exposure must be adjusted
according to the filter you use.
The URL is:
http://www.kodak.com/cluster/global/en/consumer/products/techInfo/f15/index.shtml#49741
So according to Kodak B&W filters work exactly the same with chromogenic
films as with conventional B&W films.
At 08:22 PM 1/17/2002 -0800, Shel wrote:
>Well, Tom, I was just repeating what I believe I read, and my point for
>mentioning it was to open the idea up for discussion. As for myself,
>I'm more on your side of the argument, at least until I can find the
>article and perhaps get some more information from it. Not one to shoot
>chromogenic film, I just breezed through the article and didn't think
>much about it, other than to register a bit of surprise.
>
>I will, however, add this thought, something that you touched upon, and
>that is that different films will react differently to filters. This
>became clear while reviewing filter information for the filter factor
>chart I put up on my site. So, even with regular B&W negative film
>there is some variation in the way the a given film behaves compared to
>other films. Admittedly it's usually not great (with some exceptions),
>so it's quite possible that chromogenics may behave somewhat differently
>that a "typical" B&W neg. film.
>
>Tom Rittenhouse wrote:
> >
> > Why not? If you use a yellow filter do you not reduce the blue light that
> > hits the film? And does red not reduce the blue and green? The filters may,
> > and I said may, have a slightly reduced effect due to the greater
> > sensimetric range of the chromogentic film, but why would you expect the
> > filters to work differently.
> >
> > Ciao,
> > graywolf
> > [EMAIL PROTECTED]
> >
> > ----- Original Message -----
> > From: Shel Belinkoff <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Thursday, January 17, 2002 7:55 PM
> > Subject: Re: B&W and filters and C41 B&W film
> >
> > > Hi ...
> > >
> > > I just read an article somewhere, within the last couple of days, that
> > > said regular B&W contrast filters don't behave the same way with
> > > chromogenic film as they do with regular B&W negative. I'm not saying
> > > they don't have an effect, but that the effect is different. I don't
> > > recall where i read it, so I can't provide a citation.
> > >
> > > gfen wrote:
> > >
> > > >
> > > > Second of all, do yellow and orange
> > > > filters have teh same contrast
> > > > enhancing effects on C41 B&W as they
> > > > do on traditional silver halide B&W?
> > >
> > > --
> > > Shel Belinkoff
> > > mailto:[EMAIL PROTECTED]
> > > http://home.earthlink.net/~belinkoff/
> > > -
> > > This message is from the Pentax-Discuss Mail List. To unsubscribe,
> > > go to http://www.pdml.net and follow the directions. Don't forget to
> > > visit the Pentax Users' Gallery at http://pug.komkon.org .
> > -
> > This message is from the Pentax-Discuss Mail List. To unsubscribe,
> > go to http://www.pdml.net and follow the directions. Don't forget to
> > visit the Pentax Users' Gallery at http://pug.komkon.org .
>
>--
>Shel Belinkoff
>mailto:[EMAIL PROTECTED]
>http://home.earthlink.net/~belinkoff/
>-
>This message is from the Pentax-Discuss Mail List. To unsubscribe,
>go to http://www.pdml.net and follow the directions. Don't forget to
>visit the Pentax Users' Gallery at http://pug.komkon.org .
-
This message is from the Pentax-Discuss Mail List. To unsubscribe,
go to http://www.pdml.net and follow the directions. Don't forget to
visit the Pentax Users' Gallery at http://pug.komkon.org .
