I've put up a page for filter factors that should answer your questions. Check out my site (URL in my sig file) and look under the section for Film & Developing.
jmadams wrote: > Most of my filters were bought in the 70's, > (i) I new little of photography, and > (ii) no longer have the data sheets. > I remember looking at some of the b&w prints before I moved from the UK, > they struck me as being under exposed. > > I still do not understand what compensation to make for correct exposure. > On my ME and MES I should not have a problem, but I need to know > how to set my ASA/ISO speed correctly with my SPF using TMax 100 Pro. > I will probably use the following filters: > > Yellow(K2), Green(G (x1)) and Orange(G) filter -- Shel Belinkoff mailto:[EMAIL PROTECTED] http://home.earthlink.net/~belinkoff/ You can't have everything. Where would you put it? - 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 .

