>>>>Hi Herb, I haven't a solution however I have a question for you. What shutter speeds are you achieving in most cases whilst using the filter? IS the cast the same colour for different types of film? Why I ask is I wonder if you are experiencing the effects of colour shift due to reciprocity failure of the film?
Cheers, Rob Studdert <<<< i'm shooting Provia 100F at exposures in the 10-20 second range. according to Fuji's film data guide (publicaton AF3-102E), which applies to film marketed in the US and Canada, there should be no reciprocity failure to 128 seconds, and for longer exposures, they recommend a slight green filter. i have shot one roll of Kodachrome 25 on it with exposures in the same range too and the color shift is less noticeable. i suppose i should do a test roll with a complete range of shutter speeds with a constant target and see what happens. i have a GretagMacbeth ColorChecker i can use. i had read up on the reciprocity characteristics of the film before i bought the filter. just looking through the filter isn't very helpful. 10 stops is a LOT of light loss. Herb... - 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 .
