Re: [APML]: 37 films tested (was Gold Max)

[Robert Reeves <rreeves@connecti.com>]

>Robert,
>
>Interesting tests! The reciprocity failure data is very useful.  Thanks!
>

I'll soon post the reciprocity data for all the films.

>Couple of questions:
>
>You say you varied the lighting to keep the exposure at 1/8 second at f/11
>or f/16. I'm assuming you did this to compensate for the film speed
>differences?
>

Yes.  I wanted to start the 3 f/stop sequence up high so by the time I
reached three stops wider aperture I was not down to the f/2 region.  I
don't trust the true f/stop figure when the lens gets that wide open (even
if I was using Nikors).

>Did you also vary the lighting the same amount for each film speed
>difference at the 128 second exposures?

Yes, for the faster films I had to place the flood lamp further away from
the target.
Robert Reeves                Home page http://www.connecti.com/~rreeves
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