E6 Help

[coops]

I have the Kodak chemicals and plan on developing my first 4x5 slides this weekend using the Jobo. The 4x5 drum needs a minimum of 230cc's of developer I think. I will probably develop 2-3 negs at a time in case I screw up and would like to know if I can re-use that 230ccs of chemical for another 2-3 negs, or toss it and use fresh.

[John Brady]

If you get your temperatures and times right e-6 with a jobo is a snap. I would say do ten sheets and don't reuse the chemicals. Don't be afraid...

www.timeandlight.com

[coops]

Thanks John. Saw your work at the Gainesville Downtown show recently. Wow, really good.

[Greg Blank]

If anything like the website I would rephrase as spectacular!


Thanks John. Saw your work at the Gainesville Downtown show recently. Wow, really good.

[Greg Blank]

I am going to second not reusing chemical in the Jobo - for film. My best experience is with non reusing. Although for prints you can use typically get about 3-4 runs of RA4 with a single liter especially if you use acetic acid stop between developer and bleach fix.




I have the Kodak chemicals and plan on developing my first 4x5 slides this weekend using the Jobo. The 4x5 drum needs a minimum of 230cc's of developer I think. I will probably develop 2-3 negs at a time in case I screw up and would like to know if I can re-use that 230ccs of chemical for another 2-3 negs, or toss it and use fresh.

[John Brady]

If anything like the website I would rephrase as spectacular!

Greg, very kind, thanks!

Coops, the Gainesville show is one of my favorites. It was nice to see you at the show!

www.timeandlight.com

[VictoriaPerelet]

To mix 230ml you'll need to recalculate all proportions and you'll end up with dangerously small amount of CD part B.

Just mix 350ml as it says on the box, use 230ml if you really want (why?:) jobo says 230ml min, you can have more) and if you have less than ~8 sheets reuse with no problem.

[tgtaylor]

Kodak advises not to reuse the chemistry in its E-6 single-use kit:

"The bleach and fixer, along with the rest of the solutions in this kit, are designed for simplicity of use. They should not be re-used or regenerated."

FWIW, I procesed 2 rolls of 135 Velvia that I shot during the Chineese New Years Parade in San Francisco. The film expired 8/08 and the kit's expiration date was (is) 10/09. (I've been shooting color negative and haven't shot transparency in quite some time.) The film came out great! I used 6:30 for the first developer (Jobo) and Kodak's recommended temperature of 100.4F.

Thomas

[eric black]

youll have enough on your plate at certain steps workwise so collecting and segregating chems will just make the run too busy. I use 250 mL for 10 sheets and pay attention to the times recommended- never had a problem and the results have always looked great.

[vinny]

I always mix 500ml and just use 1/2 per batch. set your machine a bit higher than the recommended temp and give it time to warm up.

[domaz]

230ml seems low for ten sheets- you might want to double check that is enough.

[John Brady]

I use 250ml for 10 4x5's. It's easy to mix, just half the 500ml directions.

www.timeandlight.com

[coops]

Thanks guys, great advice.. Did three batches last night and the first two turned out great. The third, well..... It was late, I was tired and after I poured in the bleach for the 6 minute cycle I noticed I had a lot of color developer left. Yes, I missed that step lol. Ya live and learn.

[tgtaylor]

A quick note on amount of solution. Kodak states:

For best sensitometric results, use no less than 250 mL of each solution per square foot of film (235 mL for two 135-36rolls). This kit is designed to use an equal volume of all solutions. Some film holders or tubes may require more solution to produce better uniformity or to compensate for solution oxidation. Check your processor manual for the solution volume recommended for your processor.

It further defines the area of each format as:

EQUIVALENTS IN SQUARE FEET
FOR FILM FORMATS Film Size
4 x 5-in. sheets 0.134
5 x 7-in. sheets 0.238
8 x 10-in. sheets 0.549
11 x 14-in. sheets 1.064
135-24 0.395
135-36 0.556
120 0.550
220 1.090

Note that the above is slightly different from the raw computational values. Perhaps they are taking into consideration the film edge. Anyway, according to Kodak you need a minimum of 335mL of chemistry for 10 4x5 sheets.