At 09:06 AM 2/19/99 +1100, you wrote:
>>
>> Makes for a good argument to advance the film just prior to
>> exposure. That
>> will result in more consistent (don't read accurate) OFT exposures.
>>
>
>Yeah right, maybe you could pull the film out of the camera and measure the
>reflectance before each exposure !
>
>Wayne Harridge
You do raise an intersting point, Wayne. IE: How do we *know* the reflectance
of the film is the same during the time it is briefly exposed as it is after
it's been in the light long enuf to take a spot reading from it? I mean, it's
really a case of possibly being unable to do the experiment without altering
the variables.
George
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