Using Jobo Tank w/ Hand Agitation?

Since getting hooked on LF, I have done all color except
for a few Polaroids. I'm thinking about playing with real
B&W film, and I'll need to process my own film. I have
done 4x5 using frames with dip and dunk tanks, but I don't
have a darkroom in this house nor much desire to build
another; I'll be scanning the negs and printing digitally.
So, I'm planning to load a daylight tank in a changing bag
and then process.

The question is, will a Jobo tank give good results
if used with inversion agitation? Or will it leak all
the developer out if inverted? Other tank suggestions
would be gladly considered as well. Thanks.

In article ,
Dean Van Praotl wrote:

Since getting hooked on LF, I have done all color except
for a few Polaroids. I'm thinking about playing with real
B&W film, and I'll need to process my own film. I have
done 4x5 using frames with dip and dunk tanks, but I don't
have a darkroom in this house nor much desire to build
another; I'll be scanning the negs and printing digitally.
So, I'm planning to load a daylight tank in a changing bag
and then process.

The question is, will a Jobo tank give good results
if used with inversion agitation? Or will it leak all
the developer out if inverted? Other tank suggestions
would be gladly considered as well. Thanks.


I invert the tank every time I use the Jobo to process
film, basically using the lift to rock the drum up and down
several times for a few moments per minute. It insures that
the film is evenly coated with chemistry. The short anwser is
yes it does.

You don't want to completely tip the drum to where it
empties the chemistry, but you can raise it almost all the way
without dumping chemistry.
--
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"To announce that there must be no criticism of the President,
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to the American public."--Theodore Roosevelt, May 7, 1918

Dean Van Praotl wrote:


The question is, will a Jobo tank give good results
if used with inversion agitation? Or will it leak all
the developer out if inverted? Other tank suggestions
would be gladly considered as well. Thanks.


If you get the tanks with a red cap not the cog then sure. OTOH it's ALOT
of developer in that mode. IIRC 1.5 litres for the smallest tank that can
take a 4x5 reel. At most that's six sheets. It's also 1.5 litres with one
sheet.

Now with the slightly bigger tank you can use the tank on a motor.


http://www.jobo-usa.com/faq/drums_on_motorbase.htm

Like this you can get away with 600ml of chemicals for up to 12 sheets.
I think you'd quickly find this is a nicer setup then trying to manually
invert the tank. It's also cheaper in terms of chemicals used. Or if you
want you can go the other way and use highly diluted chemicals. The motor
will handle fairly hefty amounts of chemicals.

Nick

I recommend the HP Combiplan tank.

Jani

"Dean Van Praotl" kirjoitti
om...
Since getting hooked on LF, I have done all color except
for a few Polaroids. I'm thinking about playing with real
B&W film, and I'll need to process my own film. I have
done 4x5 using frames with dip and dunk tanks, but I don't
have a darkroom in this house nor much desire to build
another; I'll be scanning the negs and printing digitally.
So, I'm planning to load a daylight tank in a changing bag
and then process.

The question is, will a Jobo tank give good results
if used with inversion agitation? Or will it leak all
the developer out if inverted? Other tank suggestions
would be gladly considered as well. Thanks.

"Dean Van Praotl" wrote in message
...

The question is, will a Jobo tank give good results
if used with inversion agitation? Or will it leak all
the developer out if inverted? Other tank suggestions
would be gladly considered as well. Thanks.

Try finding one of the old mini Cibachrome drums from about 1975 (?). I
bought one with the Ciba trial kit when visiting Dallas, and it now has a
new lease of life when I process my 5x4s. It takes 25ml per sheet, and
takes one sheet comfortably. I've tried two sheets and it's slightly too
small - overlap takes place.

--
M Stewart
Milton Keynes, UK
http://www.megalith.freeserve.co.uk/oddimage.htm

"Dean Van Praotl" wrote in message
...

The question is, will a Jobo tank give good results
if used with inversion agitation? Or will it leak all
the developer out if inverted? Other tank suggestions
would be gladly considered as well. Thanks.

Try finding one of the old mini Cibachrome drums from about 1975 (?). I
bought one with the Ciba trial kit when visiting Dallas, and it now has a
new lease of life when I process my 5x4s. It takes 25ml per sheet, and
takes one sheet comfortably. I've tried two sheets and it's slightly too
small - overlap takes place.

--
M Stewart
Milton Keynes, UK
http://www.megalith.freeserve.co.uk/oddimage.htm

Thanks all for the replies.

Thanks all for the replies.