Ektar 100 Long Exposure & Reciprocity Failure

[stormy]

Hi,

I'm interested in trying out some 4x5 Ektar 100 for some long exposure images in the 30 sec to 1 min range. I've looked around but can't find much info on how it will behave under those conditions. I plan on experimenting, but any advice on where to start is much appreciated.

[Eric James]

Kodak's data sheet isn't very helpful. It suggests experimentation, as you plan:

http://www.kodak.com/global/en/professional/support/techPubs/e4046/e4046.pdf

I suspect that this is because it doesn't handle long exposures well - there are some discussions on FlickR supporting this notion. Perhaps you can use the green shift to your advantage.

Here's an APUG discussion:

http://www.apug.org/forums/archive/index.php/t-57031.html

[Jim Noel]

Personal expedrimentation is usually the best answer.