According to Kodak, that's not always true - it's not an absolute. One of their publications on TX, for example, shows a different filter factor for daylight and for tungsten. Recent experience shows the best exposure (filter factor) does seem to vary with the light. IOW, one stop isn't always correct.
However, my original question dealt with how the meter reads the the light through the filter, and whether or not the amount of blue, or other colors I suppose, in the light would affect the filter factor. I also mentioned that the true test would be to expose some film, just as you suggested. Mike Johnston wrote: > No, the filter factor doesn't, but the need for the filter probably does. > > Also, metering isn't the best way to determine a filter factor. I hate to be > so non-technical, but a simple trial actually works best--just meter the > scene for no filter and bracket the factor, and see which neg looks best (or > prints best). > > I think you'll find that with a K2 (medium yellow) it really is one stop... -- Shel Belinkoff mailto:[EMAIL PROTECTED] - 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 .
