sje@xxxxxxxxxxxxxxxxxx writes:
<< I thought that you could use auto if the amount of infra-red was
proportional to the amount of visible light. >>
Simon,
does Kodak recommend shooting at 400 without a red filter or with
a red filter?
This can make a big difference as the original question was shooting on auto
using a deep red filter.
If Kodak recommends using a filter they may still be assuming you are
metering manually with a seperate meter ( without
a filter on the meter) but with the filter on the camera?
If that is the case, you could meter the scene without the filter on the
camera and then remeter with the filter on. This will give you a correction
factor to dial in on the film speed compensation for subsequent auto
exposure use But if the meter sensitivity has dropped off too much with the
filter in place then this may be too inaccurate to use auto.
Cheers,
Tim Hughes
Hi100@xxxxxxx
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