1+50 Rodinal time for Arista Pro 50

[clintock]

I'm still bumbling my way through some of that Arista Pro 50 sold by Freestyle a while back..
Last night I 'developed' a roll of the stuff in some 1+50 rodinal for 11 minutes at 20c.
I got the 11 minute from a chart-I got a little mixed up thinking I guess that the film was really Delta 50, when it's really Pan F, right?
The film came out almost totally clear, save for the leader, which was black, even the numbers on the edge were nearly clear, only a couple frames that had too much sky in the image clued me into looking closer. The images are so faint that when the light hits the negative just right, the image is positive!

The tmax and tri-x I did in the other tanks using the same batch of mixed rodinal turned out fine..

So is the Arista Pro 50 really Ilford Pan F, or Pan F Plus? The agfa box said for Pan F I should have gone 18 minutes- does this sound right? Is there a difference between Pan F and Pan F+ if indeed that is what the Arista is?

 

[kully]

That really is strange, I've done my rolls of the Arista 50 with the same Rodinal concentration, time and tempreture and they've been fine.

Is this the out-of-date Arista 50?

 

[clintock]

Yep this is some of the last 50 they sold- I also got some of the 'delta pro' I think it's called 100 speed too and it worked ok.. I thought maybe I had the meter set wrong, but the numbers on the edge not being devoped either has me thinking I didn't develop long enough, but the R3a is still sittin on 50, and you gotta work to change the setting on that camera..
I agitated per the box, an inversion every 30 sec after the constant for 30 sec initially.
The tank uses 450ml, so the quantiy of rodinal is enough I think..
The freestyle chart has a time for 1+25, I guess I should try that, but I prefer 1+50 for prevention of just this kind of thing, hoping the longer time will buffer my errors..
Oh plus it's cheaper! well it was until now..
Upon further reading via google, it seems this film is a good candidate for diafine, which I just happen to have on hand.

 

[Trius]

Something is really weird about this. I'm guessing mis-measurement on the dilution, but saving that, it's just strange. Shoot another short (e.g., 12 exp. ) roll and try again.

Earl