Jobo Friendly Film/Developer Combinations

[dfoo]

I use XTOL 1+2 in a rotary processor... works great. 12.5 minutes at 20C for TMAX 400 using EI 200.

 

[venchka]

dfoo,
Give 1:3 a try. You can find the old Kodak German Xtol PDF file online. Don't worry about the German text. You can still read the numbers. Grinning.
The section on rotary processing and 1:1, 1:2 & 1:3 dilutions starts on document page #19, or PDF page 21.

http://http://wwwfr.kodak.com/AT/plugins/acrobat/de/professional/xtolEntwickler.pdf

 

[dfoo]

When I did the original tests with TMAX I did 1, 1+1, 1+2 and 1+3. I found 1+2 to be the best compromise between grain and sharpness and time of development... I think each dilution added something like 20% to the development time. Truth be told there wasn't much between all of the negatives. In an 8x10 they were indistinguishable. Through a grain scope I could tell the difference... I'm not sure if I looked at them today (without looking at the labels) I could tell the difference all the same.

 

[jan normandale]

No opinion. Just fact. I do it. It does no harm. It may do some good. I will continue to do it.

Hi Wayne, sometimes I'm just not 'wordy' enough. The point I wanted to bring forward with the link was some people may automatically presoak as part of their process however some film makers advise not to. Personally I usually follow instructions unless I feel like exploring new results. So for the HP5+ users a pre soak is not recommended by Ilford and they specifically advise not to in their "film processing charts "Agitation" last sentence.

http://www.ilfordphoto.com/Webfiles/2006216122447.pdf

I read this stuff… ;D

BTW I saw your comments on using a base motor and drum over at LFPF..

I saved them ;- )

 

[Fotohuis]

High acutance developers like Rodinal don't like much agitation at all so in a continous Jobo rotary system it's killing the acutance too.

I have an automatic Heiland TAS inverse processor for these type of B&W developers.

What I can recommend in a Jobo (CPA-2 which I am using):
C41
E6
B&W CG-512/RLS on 24C
B&W AM74/RHS on 20C (light rollers installed)
B&W Xtol/ Fomadon Excel W27 on 20C (light rollers installed)

Best regards,

Robert

 

[Keith Tapscott.]

Most film developers should work well in a Jobo, although I suggest avoiding developers such as Kodak HC-110 at dilution B or similar types of developers.
They can work well, but the times are too short for my liking and a 30 seconds development error is much greater if your total development time is only around 5-6 minutes compared to a slower working developer that requires 10-14 minutes to reach the same contrast index.

 

[bwcolor]

Neopan 400 @ EI 200 Rodinal / Jobo..

Neopan 400 @ EI 200 Rodinal / Jobo..

Kids were coloring eggs and I was curious about grain size with Jobo/Rodinal. I went 71/2 minutes @ 68 degrees 1+50 using a one reel tank and just 140ml of developer. To my surprise, it looks good and grain is minimal. BTW>... This is a post regarding developing the film and not the eggs.

 

[77seriesiii]

I'm surprised that pyrocat hd wasnt mentioned. I use it for semi-stand, stand, agitation and in our jobo. apug has oodles of threads on pyro in a rolling processor and Sandy King developed the pyrocat-hd with roller processing in mind. If you want to use a staining developer, give pyrocat a try. there are other pyro formulas but they are not made for rollers. The dry ingredients (diy mix) or in solution can be purchased from photo formulary, b&h, freestyle, etc. I started w/ rodinal and still like it for certain films but use pyrocat hd for most projects.

here is a good site that consolidates pyrocat HD threads/info:
http://www.pyrocat-hd.com/

./e