Jobo 3010 Maximum Capacity?

[Keith Tapscott.]

I am considering buying a 3010 Expert-Drum, but I am worried about the maximum processing solution-volumes in this chart. http://www.jobo.com/web/Expert-Drums.338.0.html

I want to use D-76 diluted 1+1, but the chart says 330ml is the maximum it holds which would be just 33ml for each 4x5 sheet. Are there any users here of this drum and developer?

Films will be FP4 Plus and HP5 Plus and I have a CPA2 with lift if that helps.

[dbla]

I'm interested in this as well, will follow the discussion... :-/

[Jason Greenberg Motamedi]

That page is wrong, the correct maximum for the 3010 and 3006 should be 1000ml. If you put much more in it will spill out as it turns.

Of course, this may still not meet the minimum requirements for D76 and you might have to use fewer than 10 sheets at a time.

[ScottM]

I've been using 10 sheets of HP5 with 1L of developer (Xtol @ 1:1) without any problems.

From Jobo.com

Drum #3010
10 pieces of 4 x 5" film or paper
Solution required
Minimum 210 ml
Maximum 1000 ml

[Keith Tapscott.]

Jason and Scott, thanks for the correction to the link I posted. I thought the maximum volume of just 330ml seemed odd.
As for the minimum requirements of developer, Ilford's suggestion of 100ml of stock ID-11 for each 80 square inches of film is well within the limit if I can use a litre of 1+1 working strength developer. Their 1+3 dilution would be just on the limit.

Thanks again,

Keith.

[Sal Santamaura]

Per the capacity chart at the top of page 7 of this document

http://www.kodak.com/global/en/profe...bs/j78/j78.pdf

250ml of stock D-76 is required for each 80 square inches of film. Since a 3010 drum can hold no more than 1000ml, at 1:1 dilution you will be limited to 8 4x5 sheets.

[Keith Tapscott.]

Per the capacity chart at the top of page 7 of this document

http://www.kodak.com/global/en/profe...bs/j78/j78.pdf

250ml of stock D-76 is required for each 80 square inches of film. Since a 3010 drum can hold no more than 1000ml, at 1:1 dilution you will be limited to 8 4x5 sheets.

It seems that Ilford are a bit more conservative in their estimations than Kodak.

Thanks Sal.

[Oren Grad]

Per the capacity chart at the top of page 7 of this document

http://www.kodak.com/global/en/profe...bs/j78/j78.pdf

250ml of stock D-76 is required for each 80 square inches of film. Since a 3010 drum can hold no more than 1000ml, at 1:1 dilution you will be limited to 8 4x5 sheets.

At least in my experience, that's very conservative. I use 4 US fl ounces of straight D-76 per 8x10 sheet, with proportionate amounts for smaller and larger sheets, and it works fine. For smaller sheets where that would come out to too low a solution volume for the drum, I dilute to 1+1.

[Sal Santamaura]

It seems that Ilford are a bit more conservative in their estimations than Kodak...

I'm not sure about "conservative."

I assume you concluded that Ilford suggests 100ml of stock ID-11 for each 80 square inches of film from the table on the right side of page 7 in this data sheet:

http://www.ilfordphoto.com/Webfiles/200621612182416.pdf

Note that the table is introduced with a restriction: "...provided that the developer is reused."

Also note the last statement on page 8:

"We do not recommend reusing diluted developers, 1+1 and 1+3, always use fresh solutions on each occasion."

I cannot find any part of the Ilford data sheet that addresses capacity when used at 1:1 dilution and one-shot. Given the similarity between D-76 and ID-11, I'd suggest following the Kodak 250ml of stock per 80 square inch capacity limitation.

[Sal Santamaura]

...I use 4 US fl ounces of straight D-76 per 8x10 sheet, with proportionate amounts for smaller and larger sheets, and it works fine...

"Works fine" is a subjective judgement.

Manufacturers' capacity specifications are designed to assure adequate active developer regardless of scene content. If one photographs scenes that integrate to middle gray or darker, half Kodak's specified minimum will be sufficient. If the scene integrates to brighter than middle gray, which should a result in a negative that integrates to darker than middle gray, there will be insufficient active developing agent in half Kodak's specified minimum. Whether one finds that negative "fine" is a personal call.

I prefer to avoid "compensating" development unless intentionally seeking it.