>From: [EMAIL PROTECTED]
>>Or you could borrow a flash meter and run some of the
>>tests without burning
>>film ...
>Careful! If the metering is done by measuring the light
>reflected off the film, and there is no film in the
>camera you will get an erroneous reading. The pressure
>plate is less reflective/lighter than film.
True, but since the experiment described was to compare the performance of
an assumed-good flash with his flash, the reflectance of the back plate
won't matter -- assuming both units can provide enough light to yield a
flash-OK signal, they should both provide the same amount of light
regardless of their guide number or the reflectance of the black plate.
later,
patbob ([EMAIL PROTECTED])
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