In a message dated 12/16/99 3:05:54 PM Eastern Standard Time, HI100@xxxxxxx
writes:
> A common question on this list is what reflectivity is used for simulating
> film reflectivity on the shutter curtain and often people say that it is
> the
> same as an 18 0rey card. One of the Minolta patents on regular OTF
> metereing
> (US patent 3687026), specifies that a value of 26.7 hould be used.
I always felt that it was quite a coincidence when people said that the
reflectivity of film was all that close to 18 0ray.
Paul Schings
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