HP COMBI-PLAN T 4X5 SHEET FILM DEVELOPING TANK

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Other than that, as far as I know, the only other option is a rotary tube processor, which is expensive and bulky. This is great in theory, but in practice, the funnel channel and air vents are so small that it takes about 40 seconds to fill the tank. I’d rather have knowledge certain that the lid is on and light-tight before I take the tank out of the bag ino the light. Unless you’re using a split-bath developer like Diafine that isn’t terribly time-sensitive or are doing stand development with a high dilution, I don’t see how you could possibly get even development with this thing as by the time the top of the sheet is covered, the bottom has already been covered with developer for quite some time. I think it would be great for dip and dunk processing in a darkroom as the whole unit picks up easily without disturbing the film and seems to drain well. To fill the tank, you cap the bottom spout, affix the funnel and open the top air vent accomplished by twisting the spout , and pour your chemistry in. Why not just turn it upside-down and drain it out the top?

If you want a daylight tank, I recommend that you save your film, your money, your chemistry, and your sanity and skip it. Other than that, as far as I know, the only other option is a rotary tube processor, which is expensive and bulky. If you want a film hanger for dip and dunk, this may be your ticket, as it loads easily and drains well. Feed a sheet into each of the the slots and you’re good to go. The problems start once you put the lid on. I can’t seem to find any of the long-discontinued Paterson Orbital processors that Katie Cooke raves about for sale in the US.

I think it would be great for dip and dunk processing in a darkroom as the whole unit picks up easily without disturbing the film and seems to drain well.

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If you want a daylight tank, I recommend that you save your film, your money, your chemistry, and your sanity and skip it. The problems start once you put the lid on. Feed a sheet into each of the the slots and you’re good to go. Because this thing is a messy, leaky bastard. I think there’s a word for that, and I think that word is “bad”. Speaking of the caps, they’re held on by those little plastic fishing line fasteners that hold tags to clothing, the ones with a T on each end.

HP Combi-Plan T 4×5 daylight film developing tank review

The HP Combi-Plan T is an ostensibly invertable daylight processing tank for 4×5 sheet film and glass plates. If you have a hose to your faucet, you reverse the flow for washing by hooking the water up to the bottom plug and it overflows out the top.

Unless you’re using a split-bath developer like Diafine that isn’t terribly time-sensitive or are doing stand development with a high dilution, I don’t see how you could possibly get even development with this thing as by the time the top of the sheet is covered, the bottom has already been covered with developer for quite some time.

Why not just turn it upside-down and drain it out the top? The lid seal leaks, chemistry leaks out the top air vent when you fill the tank, and chemistry blobs out when you remove the cap for drainage. Unless you turn it upside-down to get the chemistry away from the spout, but then the lid leaks, which it does when you invert the tank to agitate.

Unfortunately, it seems to be one vombi-plan the only options for 4×5 daylight processing. Once you get the film carrier assembled the instructions are sketchy the film carrier is actually nice. To fill the tank, you cap the bottom spout, affix the funnel and open the top air vent accomplished by twisting the spoutand pour your chemistry in.

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HP Combi-plan T 4×5 Sheet Film Developing Tank System #459809

But if you have a darkroom, you probably wouldn’t buy a daylight tank, would you? Devrloping difficult to tell when you’ve got the lid all the way on by touch, which does not fill me with confidence.

I can’t seem to find any of the long-discontinued Paterson Orbital processors that Katie Cooke raves about for sale in the US. This is compounded by draining out the bottom, which takes about 30 seconds, meaning that the portions of film shheet the bottom of the tank get 1 minute and 10 seconds more time in the developer than the portions at the top.

Other than that, as far as I know, the only other option is a rotary tube processor, which is expensive and bulky. HP went to the trouble of making the vents that surround the spouts open and close by twisting, why not go the extra centimeter and have it lock shut completely and forget about the caps altogether?

This is great in theory, but in practice, the funnel channel and air vents are so small that it takes about 40 seconds to fill the tank.

Yankee CF Replacement for HP Combi Plan | B&H Photo

If you want a film hanger for dip and dunk, this may be your ticket, as it loads easily and drains well. The system would still suck, but it suck less in that there would be two less pieces to lose and it wouldn’t be quite as messy.

I’d rather have knowledge certain that the lid is on and light-tight before I take the tank out of the bag ino the light.