Reciprocity calculation for Tmax 400

**Robert Hughes** · 15-Aug-2007, 12:34

The general rule for reciprocity and film shooting at night is you almost can't overexpose. If you need more than a minute or 2, you can leave it open for 5 minutes or an hour and it probably won't make much difference. Try it and find out your sweet spot.

**Robert Hughes** · 15-Aug-2007, 12:43

"The general rule for reciprocity and film shooting at night is you almost can't overexpose. "

Maybe this belongs in the "worst advice ever!" thread...

**timbo10ca** · 15-Aug-2007, 21:10

Originally Posted by Robert Hughes

"The general rule for reciprocity and film shooting at night is you almost can't overexpose. "

Maybe this belongs in the "worst advice ever!" thread...