----- Original Message ----- From: "Shel Belinkoff" Subject: Re: Using a Yellow Filter
> I understand that, but let's get back to one of the original questions. > If there is less blue in the light, which is what, in essence, a yellow > filter prevents from reaching the film, would the filter factor change? It would seem logical that it would, but I am not so sure. If the ambient light is already -blue, then the exposure factor would change based on that colour deficiency (the combination of meter error and film speed shift necessitating the adjustment), but the filter factor should stay the same. I think the exposure adjustment in the situation you describe would be filter factor + exposure factor = exposure adjustment. Am I making any sense here? William Robb - 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 .
