BTZS Development Tubes & Barry Thornton's 2-Bath

[Andrew O'Neill]

I was curious to see if these tubes would work, especially since very little solutions are required to process one 4x5 sheet (65ml for part A, and for B)...

 

[grahamp]

One shot for parts A and B, I presume. 65ml is near enough 1/15 of a litre, which is about all I'd expect from B2B as regards basic capacity. With re-use I find that solution volume losses drop my effective capacity to 10 8x10 equivalent per litre.

I use it with a Jobo, though with more volume and film per load, of course. A 2523 tank needs 270ml for 6 sheets of 4x5. That's between 45 and 67.5ml per sheet depending on if the load is 4 or 6 sheets. So about the same volume per sheet.

Useful to have the capacity confirmed by other methods, though!

 

[juan]

I’d like to know what you think of two bath vs. D23.

 

[Andrew O'Neill]

I’d like to know what you think of two bath vs. D23.

I like using D-23 1+1 for XRAY films, and 1+3 for Pan F 50. Eventually, I'll have to compare BT2B and divided D-23.

 

[juan]

I use X-ray film and live in an area of high subject brightness ranges, so compensation is useful to me. Maybe next week I can do some tests of my own.