FP4+ and Rodinal

I have some FP4+ MF exposed @ 64 ISO and would like to develop them in Rodinal 1+50. Any ideas how long?
Suggestions much appreciated.
Thank you !

If it were me, I would probably do 12.5 for diffusion, 11.0 for condenser, for starters.

Fred

Just about any film/dev combo can be found here: http://www.digitaltruth.com/devchart.html

Of course there is always room for personal taste.

I've been shooting a lot of FP-4+ developed in Rodinal, shot in my Hasselblad. I expose at EI-100 and develop for 14 minutes at 68 degrees. Ilford's recommended time is 15 minutes but 14 worked better for me. I did some exposed at 50 and developed 10 minutes, to reduce contrast, and that worked well too. I'd probably go 11 minutes for your EI-64 shots. Contrast will be a little low if you shot with low contrast lighting (eg. overcast day) but will look great if it was a sunny day (contrasty light).

Shot at EI-100, developed 14 minutes in Rodinal 1+50, 68 deg (20 degrees Celcius).

Shot at EI-50 and developed in Rodinal 1+50 for 10 minutes. Both shots are Ilford FP-4+ 120 size.

i love this combo, especially on 35mm where you can see the beautiful grain. it sucks on 120 film as it will hide the marvelous grain structure.