From: Diana H. Bloomfield (dlhbloom@mindspring.com)
Date: 04/13/02-04:39:06 AM Z
Yes, I'd forgotten about Larry's pinhole calculator. It's incredibly
helpful. Again, though, I think(?) you have to add for reciprocity failure
with these calculations, too.
--Diana
"Gordon J. Holtslander" wrote:
> Hi:
>
> I use Larry Fratkin's pinhole calculator at
>
> http://www.MrPinhole.com/Exposure.html
>
> This web page does the math for you. You enter the f-stop of your camera,
> it then creates a table that lists "normal" camera exposure times and
> their equivilant exposures using your f-stop.
>
> To use the table you take a meter reading and find this on the table. In
> the far left column on the same row as your meter reading you will find
> the exposure for your f-stop.
>
> Hard to explain, but it works. I calculate the f-stop for each camera. I
> feed this into the form print out the results and tape it to each camera.
>
> With this I can convert standard light meter readings on the spot without
> doing any math :)
>
> Gord
>
> ---------------------------------------------------------
> Gordon J. Holtslander Dept. of Biology
> holtsg@duke.usask.ca 112 Science Place
> http://duke.usask.ca/~holtsg University of Saskatchewan
> Tel (306) 966-4433 Saskatoon, Saskatchewan
> Fax (306) 966-4461 Canada S7N 5E2
> ---------------------------------------------------------
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