Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
> Jobo CPE2 development times |
*** Click here for the FADU 2015/2014 Yearbooks *** |
|
Thread Tools | Search this Thread | Display Modes |
#1
|
|||
|
|||
Jobo CPE2 development times
I've managed to pick up a Jobo CPE2 rotary processor. Is there any advantage in using this system over standard black and white developing techniques and if so does the developing time have to be reduced?
|
#2
|
|||
|
|||
I’ve just got one myself and would also be interested in B&W developing. I haven’t had chance to use mine yet
Sent from my iPhone using Tapatalk |
#3
|
|||
|
|||
Jobo processor
The constant agitation is recommended on the Ilford website that the times should be reduced by 15%. I find this to be insufficient reduction and always ended up with quite contrasty negatives. So it may take a bit of experimentation.
Use the stop bath for 30 seconds and the fixer for the same time. As it happens I have gone back to hand processing for B&W because of this, but still use the water bath to stand the tank in to keep it up to temperature. However For processing Ilford XP2 (That uses colour technology) the development times remain the same. Likewise C41 colour films there is no change either. |
#4
|
||||
|
||||
I've used rotary development on a motor roller base for years. I believe the main advantage is practical, being the reduced volume of chemical to cover the film and that your hands are free!
The rest is pretty much negligible in my view.
__________________
MartyNL “Reaching a creative state of mind thru positive action is considered preferable to waiting for inspiration.” - Minor White, 1950 |
#5
|
|||
|
|||
Purely by coincidence, i was standing over my CPA2 yesterday wondering what i'd do if the heater element failed and i couldn't find another.
There are numerous other ways of processing film but i like the Jobo because it's consistent and i've tailored the processing workflow to suit. I also like that it keeps the chemicals at a constant temperature too. It is difficult to tame contrast with constant agitation but dilute or compensating developers can help. Mike |
#6
|
|||
|
|||
Hi I have been using one for years and I use the standard developing times ,I dont reduce them ..I do find I get a bit more contrast with constant agitation and that I like I use the slow speed ,and when doing B/W I don't put any water in it ,just make sure the heating element is OFF
|
Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
JOBO CPE2 Magnets | Derek Lincoln | Darkroom | 4 | 22nd September 2012 09:50 AM |
JOBO CPE2 Processor lift. . . . help required!!! | BRBPhotograph | Darkroom | 5 | 1st June 2012 07:17 AM |
Jobo CPE2 | AllanB | Darkroom | 2 | 28th September 2010 04:06 PM |
10x8 film in jobo cpe2+ | robinb | Darkroom | 3 | 21st June 2010 07:56 PM |
Jobo CPE2 | Neil Smith | Darkroom | 3 | 14th May 2010 08:52 AM |