hp5+ @400 in Rodinal 1+50: time?

[jakub 1664876965]

Please help, I have relatively important roll of HP5+ shot @400 and

need to develop it in Rodinal. I decided for 1+50 but I'm confused

about times. Ilford materials say 11mins and Agfa (developer

instructions) says 15. This is big difference with similar recommended

agitation. So please does anybody regulary use this combo? The roll

was exposed in sunny weather and I would like to get normal contrast.

I usualy agitate first 30 sec. and then 2-3x every 30 seconds.

Thanx in advance

[chris_waller]

It depends also on whether you are using a condenser head enlarger or a diffuser head. I would agree with the Agfa time but I would suggest four inversions in the first 30 seconds, one inversion at the end of the first minute, then one inversion per minute after that. The reduced frequency of agitation will limit highlight density.

[rick_jones5]

If this roll is as important as you imply I wouldn't trust anyone's advise. Expose, process and print a test roll (or 2 or 3 or 4---). Beats the WAG approach.

[hans_beckert]

I agree about running test rolls first. Simply take more under the same conditions.

[tonghang_zhou]

Jakub,

<p>Seems you have already decided on using in Rodinal, nonetheless I might mention that my own experiment with HP5+ in Rodinal (1+25) showed it was a poor combination (grainy), worst of all that I have since tried for HP5+. After a while I made up my mind that Rodinal is good only for slow films (like TMAX, FP4+), but not for fast films. Perhaps 1+50 dilution is different. Since you asked the question, I suppose you have not tried the combo yourself before. If the roll is really important, perhaps something more mainstream, like D76 or HC-110, would be safer?

[bob haight]

A lot of folks love HP5+ in DDX, an Ilford liquid developer. Great tones and very little grain. Comments here suggest Rodinal is too grainy for 35mm best used for 120 and beyond.

[hans_beckert]

Why do you say you 'need to develop it in Rodinal'? Is this some kind of college assignment? Or is some coercion involved?

[frank.schifano]

Jakub:

This is not a good combination if you're talking about 35mm film. I tried it and don't like it. Now I reserve Rodinal for larger format and slower films. Shoot a test roll under similar conditions, cut it into three sections and develop them separately in Rodinal for 11, 13, and 15 minutes. Don't be surprised if the resulting prints are not up to your expectations. Agfa's recommended times are a bit on the high side and tend to produce very contrasty negatives.

[scott_eaton]

Considering that generic developers like DDX, D76 and HC110 do such an awesome job with HP5 over Rodinal perhaps Jakub is being forced to do this.

 

Rodinal does wonders with Tri-X pro. It does ugly things to HP5 unless diluted to 1:50 and rated at EI 200.

[jakub 1664876965]

Thank you all for suggestions. Maybe I confused you with "need to", I sould have written "want to get maximum sharpness and economy is also important." I normally use D76 1+1 and it is good but here in Czech Republic D76 is expensive (ID11 as well) and I saw some prints from HP5+ developed in Rodinal - grain wasn't fine, but grain structure looked nice and also sharpness was good. I'm sorry for my poor english.

[hans_beckert]

Jakub H* , feb 11, 2004; 09:39 a.m.

Thank you all for suggestions. Maybe I confused you with "need to", I sould have written "want to get maximum sharpness and economy is also important."

 

Thank you for explaining. As several others have said, this is not an ideal match. Paterson Acutol is a better match for both best sharpness and fine grain. I recommend that highly for HP5.