Jobo Rotary Development HP5 in Pyrocat HD - Uneven development

[dgc]

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Continuing the recent threads on film development problems, can someone offer some advice on what is going on with this development?

I have attached a photo, which hopefully shows the gradual darkening of he negative in 3 stages. Not the best background I know.

The development was per the Massive Dev Chart:  Pyrocat 2+2+100 for 10 mins at 22 deg C on the slow revolution setting of my CPE2 (Sandy King recommended the slow setting though I have also read that max speed should be used ...). I mixed 260 ml of developer where the drum states 240ml, I didn't trust it would be enough !!!

Is it a light leak in the drum given that the negative edges have fogged at a similar amount to the rest of the negative or is it over development given some of the negative will spend longer submerged in the developer? 

 

I am hoping to do some colour C41 developing tomorrow - any advice on rotary times and temperatures ?

Many thanks, David

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Edited April 26, 2021 by dgc

[Reini]

Has the film slipped out of the grooves and stuck together? So that the chemicals couldn't do it well?
This can happen if the roll film is strongly curved.

[dgc]

18 minutes ago, Reini said:

Has the film slipped out of the grooves and stuck together? So that the chemicals couldn't do it well?
This can happen if the roll film is strongly curved.

I don't think so, but I found it quite difficult loading the reels, so this could be a reason. 

[Reini]

Until now I have always used a very old Polish development tank. It was always difficult then. Sometimes it took 2-3 tries until the film was good in position.
Now I have a Paterson Universal 3 (multi reel) tank for my next films. I hope it will be better.

[250swb]

Two things, you have general edge creep problem on the film to start with, but then you have two separate and clear exposure interventions at around frame four and then frame seven which because they overlap into the edge of the film make it a processing problem, light leak, whatever.

 

[Pyrogallol]

Are you sure it’s not fogging in the camera? The slight fogging on the edge is not uncommon probably just the film not wound quite tight enough on the spool after being taken out of the camera. 

I don’t know the tank you used so cannot comment on that, I only use Patterson tanks myself. The start point of the fogging looks quite a sharp cut off, more like opening the back of the camera in the light or something to do with the tank? The amount of liquid in the tank or agitation should not cause this. If the film coils had stuck together there would be clear areas where the chemicals had not got to it. This looks like light leaking part way through some point in handling the film.

For C41 processing stick to the time and temperature instructions that come with the chemicals you are going to use. The last time I did C41 it was 3 minute 45 seconds at 38c.

Edited April 26, 2021 by Pyrogallol

[dgc]

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12 minutes ago, 250swb said:

Two things, you have general edge creep problem on the film to start with, but then you have two separate and clear exposure interventions at around frame four and then frame seven which because they overlap into the edge of the film make it a processing problem, light leak, whatever.

 

Thanks Steve. When you say processing problem, light leak, whatever, do you mean there is a light leak within the tank (jobo drum) during processing?

[Reini]

vor 12 Minuten schrieb Pyrogallol:

Are you sure it’s not fogging in the camera? The slight fogging on the edge is not uncommon probably just the film not wound quite tight enough on the spool after being taken out of the camera. 

I don’t know the tank you used so cannot comment on that, I only use Patterson tanks myself. The start point of the fogging looks quite a sharp cut off, more like opening the back of the camera in the light or something to do with the tank? The amount of liquid in the tank or agitation should not cause this. If the film coils had stuck together there would be clear areas where the chemicals had not got to it. This looks like light leaking part way through some point in handling the film.

For C41 processing stick to the time and temperature instructions that come with the chemicals you are going to use. The last time I did C41 it was 3 minute 45 seconds at 38c.

Pyrogallol You are absolutely right. An exposed film can be seen after opening the camera.
2-3 shots are double-exposed. I think more of 35mm film. But roll film with protective paper?

[dgc]

23 minutes ago, Pyrogallol said:

Are you sure it’s not fogging in the camera? The slight fogging on the edge is not uncommon probably just the film not wound quite tight enough on the spool after being taken out of the camera. 

I don’t know the tank you used so cannot comment on that, I only use Patterson tanks myself. The start point of the fogging looks quite a sharp cut off, more like opening the back of the camera in the light or something to do with the tank? The amount of liquid in the tank or agitation should not cause this. If the film coils had stuck together there would be clear areas where the chemicals had not got to it. This looks like light leaking part way through some point in handling the film.

For C41 processing stick to the time and temperature instructions that come with the chemicals you are going to use. The last time I did C41 it was 3 minute 45 seconds at 38c.

Thanks for this. My memory is terrible and I need to take notes while out and in the darkroom but now you say this, there was one film where I got the strap caught between the film cassette and film back holder while inserting the film cassette, then pulled it out a few or more shots later ! The film back was a Hasselblad A12. An idiotic thing to do, I know. And one roll, if not the same roll, did need retightening once I took it out the cartridge. It was an early morning ...

 

I think this must be the reasoning, but then 250swb processing light leak has me confused.

Edited April 26, 2021 by dgc

[250swb]

41 minutes ago, dgc said:

 

I think this must be the reasoning, but then 250swb processing light leak has me confused.

 I said something happened at frames four and seven. The fact that the edge of the film is also (over) exposed, and it starts overlapping one frame into another suggests that it isn't a camera exposure problem but something happening during winding the film on or during  processing.

[dgc]

17 hours ago, 250swb said:

 I said something happened at frames four and seven. The fact that the edge of the film is also (over) exposed, and it starts overlapping one frame into another suggests that it isn't a camera exposure problem but something happening during winding the film on or during  processing.

Thanks Steve, I just wanted to make sure it was nothing to do with the tanks, which I can now confirm as the C-41 went well this morning. Clearly, my mishandling of the films roll caused the problems I had.