There are stainless tanks with reels for 4x5, probably designed for the
days of 4x5 press cameras when speed of processing was more important
than quality. The one advantage of these is that you can do inversion
agitation just like 35 and 120 tanks but I woud not recommend loading
more that 6 sheets in the 12 sheet reels. There are also trays that have
covers that are light tight for changing chemicals. Usually these are
8x10 and can be used with a flat rack that will take 4x5s. In the past I
have used both of these. The trays work great if you can find them. One
time when I had a lot of 4x5s to process I borrowed a Jobo 3010 and was
not pleased with the results. I use the Jobo 2509Ns in 1 or 2 reel tanks
on my Jobo but usually with only 4 sheets per reel primarily because I
use PMK and don't want to exceed the capacity of the developer in the
reasonable quantities used with the tanks (be careful of exceeding the
capacity of the available developer in any multi sheet tank!). I develop
my 8x10s, 6.5x8.5s and 5x7s in a Jobo 3005 on an old print tank rotator.
My primary Technika is in a Lowe backpack camera case with 4 or 5 lenses
in wraps, darkcloth, lightmeter, loupe etc.
Chauncey
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