It just means you have to test the first roll of every new film by taking a
few test shots at +2, +1, 0, -1 -2 of a test card with different density
patches to choose the proper ISO to set.
Tom
At 20:48 1999/12/01 EST, you wrote:
>Ian writes:
><< That's weird - how does the OTF system know what compensation to give
>for different reflectance films? >>
>Surprise, it doesn't! What has been shown to have been a safe assumption in
>the 1970's (low variation in film reflectance) is now an incorrect
assumption
>due to evolution of films and resulting high variation in film reflectance.
...
>Gary Reese
>Las Vegas, NV
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