Re: IR with no direct sunlight

[George L Smyth <glsmyth@xxxxxxxxx>]

--- Keith Zimmerman <zz_ir@xxxxxxxxxxx> wrote:
> David, you suggest changing the development time when shooting on an 
> overcast day.  Would you suggest a starting percentage for changing that 
> time?  Here in the Central Illinois countryside, we get a lot of overcast 
> days when the seasons change and I want to experiment.
> 
> Since I do not have nor have a darkroom, I rely on an excellent lab for my 
> processing.  They use TMAX at 75 degrees.  The only variable is the time.

I would recommend doing your own film processing.  It is very easy, does not
require a darkroom, and you are ensured excellent results.

One would shoot faster and extend the development time to compensate for a
scene that lacks contrast.  Of course, much depends upon how much contrast you
want to add to the scene, so it is difficult to give more than a very general
suggestion.  Perhaps shooting a stop faster and developing for an additional
15% would be helpful.  If you are using roll film, obviously this will affect
all frames on the roll.

Cheers -

george

=====
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