Re: [APML] Pre-Flashing Slide Film

[Jerry Lodriguss <jml@astropix.com>]

Flourescent lights are going to probably give you inconsistent results. Not 
only because of the strange emission lines and colors, but they flicker, so 
your short exposures may be all over the place.

You probably should try to use 5,000K light or you may get a color shift in 
the final astro picture on a frame that you have pre-flashed.

Jerry




At 10:13 PM 5/24/00 -0500, you wrote:
>I'm taking some test pictures tonight in an attempt to establish
>approximate pre-flashing periods for E100SV film.  Here's what
>I have setup:
>
>   - White matt board brightly illuminated with cool-white
>     flourescent light
>
>   - Camera set 12" away without lens shows 1/160 as the
>     normal exposure
>
>   - Planning on the following exposures:
>
>      1/160, 1/320, 1/500, 1/640, 1/800, 1/1000, 1/1250, 1/1600, 1/2000
>
>Any other ideas before I remove the film?  I will have it developed
>tomorrow and hope to use the results for preflashing some astophotos
>tomorrow night.
>
>
>
>Mike Cook, AF9Y
>http://www.webcom.com/af9y
>mwcook@cris.com
>
>
>
>
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