Quote Originally Posted by transporti686 View Post

Do you have experience with long exposures on Ilfords BW negative films with strong ND filters (etc. Hitech 3,0 ND Pro Stop, Hitech standard ND 3,0, Lee Big Stopper, B+W 106 ND, B+W110 ND)? Long exposures in daytime for 1min., 2min. max 10 minutes.

I tried Ilford Pan F Plus with orange filter and Hitech 3,0 Pro Stop ND filter for this work. Ilford Pan F Plus, because is slow film ISO 50 and with Perceptol EI 25 an this film have poor reciprocity charakteristic. This reciprocity failure is benefit for this work. I rated Pan F Plus as EI 25 and developed with Perceptol 1+1.

Do you have any pictures with long exposure on Ilfords BW films? I would like to see some works and discuss about this point. I would like to discuss about good choice of strong ND filter for BW negative.

Thank you.
Have you tried using 2 polarising filters instead of ND filters? It may give you more control.