Anyone using Jobo 1500 series for single 8x10 sheetfilm

[Nick Zentena]

Not sure the best way to load it. Perhaps load the 2830 base with two sheets first, then snap the 2870 extender on and load the next two sheets in that. Otherwise it would be quite a deep reach to get those first two sheets in place.
.

I've loaded it with paper. Loading isn't too hard once you do it a few times.

I wouldn't try snapping the extender on in the dark. Sooner or later you won't seat it right and it'll leak.

 

[jrydberg]

I've read through the thread and seen people refering to "1500 drums". Is that the 4219 tank that comes with the ATL 1500?

 

[ic-racer]

The 1500 drums are here:

 

[dng88]

I use the print drum to develop two 8x10 slide myself and it works. But in the past I tried two black and white 8x10 and always one of them have uneven issues. Not sure about in 1500 series.

We are all experimenting when we start

P.S. I use an old CPE and use the faster rotation for slide development. I no longer use 8x10 in drum as it is too "slow" for my tastes. I developed 10 by hand in tray. Recently try night google which unfortunately only helped so far to find the tray in the dark (which is not an issue at all). I am going the direction to DBI instead of using drum for black and white. .

 

[ic-racer]

Just to continue the discussion. I finally picked up the 2840 component on e-bay, so now I can make the big long tube. Here are some notes:

The 2840-2830 combo holds 4 sheets of 8x10 and cost about $65. The Expert Drum cost $400-500 and holds 5 sheets of 8x10.
There is an index prong that lines up the inner grooves of the two tubes (2840 and 2830) when they are connected together.
Therefore you can easily load an 8x10 sheet and slide it all the way to the bottom and it stays aligned in the grooves.
When using the Jobo processor, it is very easy to lift the assembly by pushing up near the 'heel' of the lift mechanism, and avoid using the lift handle.
The lift handle is, however, convenient to aid in lowering the drum back down, after it is empty.

I just did 4 sheets the other day and results with B&W negative film are excellent. I washed the film in the drum with multiple changes of water.
Though I love my 4x5 expert drum, at this point I see no reason to seek the 8x10 expert drum.

 

[Tom Kershaw]

I have tried using a 1500 series tank to develop two sheet of 8x10 at a time, but ended up with uneven development, very noticeable on areas of sky.

Tom.

 

[ic-racer]

I have tried using a 1500 series tank to develop two sheet of 8x10 at a time, but ended up with uneven development, very noticeable on areas of sky.

Tom.

When I compare my new negatives processed in the 2800 drums to the ones I previously processed in the 1500 drum, I also notice a slight excess edge development with the 1500 drum. I don't think I will use the 1500 again for 8x10.

 

[Tom Kershaw]

When I compare my new negatives processed in the 2800 drums to the ones I previously processed in the 1500 drum, I also notice a slight excess edge development with the 1500 drum. I don't think I will use the 1500 again for 8x10.

Are you processing 8x10 film in a 2800 series drum?

Tom.

 

[jeroldharter]

This is an interesting thread. I am just getting started in 8x10 and trying to figure out my procedures. So far, I am using BTZS 8x10 tubes which work very well but are a bit tedious. I happen to have a zillion Jobo drums including a 3005 and numerous 2500 and 1500 series drums.

I wonder though if development times are roughly the same from Jobo tube to Jobo tube to BTZS tube? I tried using my 4x5 BTZS tube development times for the 8x10 BTZS tubes without additional testing and the preliminary results look good. I know there is no substitute for testing, just wondering.

 

[ic-racer]

Are you processing 8x10 film in a 2800 series drum?

Tom.

Yes, see this post: (there was a url link here which no longer exists)

 

[Tom Kershaw]

Ic-racer,

I just recalled that I have also used a 2830 tank to develop 2 sheets at a time and still got uneven development inline with tank rotation.

Tom.

 

[ic-racer]

Ic-racer,

I just recalled that I have also used a 2830 tank to develop 2 sheets at a time and still got uneven development inline with tank rotation.

Tom.

Thats interesting. Was it the 'bromide drag' type of thing?

That sounds different that what I was getting with the 1500. With the 1500 I got slight excess development at the edges (rotation P, T-max dev, 80cc developer).

 

[Tom Kershaw]

Thats interesting. Was it the 'bromide drag' type of thing?

That sounds different that what I was getting with the 1500. With the 1500 I got slight excess development at the edges (rotation P, T-max dev, 80cc developer).

I can try and find an example to scan, I'm not sure how well it will show up though.

Tom.