How much rodinal is too little?

[RobertV]

Even a Fomapan Creative 200 (T200) film is still very cool in Para-Amino Phenol. E.I. 125 N=0 E.I. 160 N+1 E.I. 100 N-1.
Here an electronic microscope picture of this film: Cubical and hexagonal crystal type:

And here the film in R09, Leica M7 + Elmarit 2,8/28mm + Y-filter E.I. 160:

 

[applesanity]

Your question is a bit confusing; I've settled mainly on pouring 10mL Rodinal + 250mL water to 68F (aka 20C) temperature. That's a 1:25 ratio, and it's just enough to fill a metal tank for developing one roll of 35mm. 2 gentle inversions every 30 seconds, for 5 minutes, 45 seconds. The film is Tri-X (actually, Arista Premium 400 - the same thing), exposed at EI 320 or so. Granted, developing times less than 6 minutes tend to be volatile, but if you're really really consistent every step of the way, there seems to be trouble.

 

[Kirk Keyes]

It depends - Do you have any Agfa Brovira Grade 6 paper left? If not, then you probably need more than the least amount mentioned here...

 

[ItsReallyDarren]

I just finished stand developing a roll of Acros which came out just fine. I used 4ml of Rodinal in 600ml of water, stand developed for 1 hr.

I normally use 6ml but I was curious to see if there were any ill effects of using any less.