In a message dated 7/24/2002 2:15:12 PM Central Daylight Time, "tom" <[EMAIL PROTECTED]> writes:
> In particular, I think there three aspects of your experiment which > are questionable: > > - - your metering method > - - your definition of film speed > - - the lack of a control film > Not true..his objective was only to show a relative increase in speed, as measured by changes is the range of film densities, due to what he defined as "push" processing. The actual speed of the film, metering accuracy, etc...are irrelevant in this scenario...as long as he used the same film (i.e. control film), camera (i.e. metering method and shutter accuracy), and processing the comparisons between images can be realistically compared. He did not set out to verify actual film speed ro metering accuracy. As long as each image received the same treatment except for the experimental variable, i.e. length of development time, the other variables have remained the same and do not need to be controlled...sheesh been a long time since my university classes in experimental design. Jerry in Houston - 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 .
