Rodinal mix.

[Grandpa Ron]

I have been using Rodinal 50:1 mixture for 10 minute with Arista 200 ISO 4x5 film.

I use a daylight tank, 30 sec. fill, 9 min. developing and 30 sec. empty.

Anybody have an estimate of how much time to add or subtract for a one stop difference?

 

[Derrel]

20 percent would be a good ballpark starting figure.Depends a lot on how you want your negs to look.