Recent content by stefan4u

High Athiril. That ZoneV FD is not that bad, that’s right! But as you remarked, there is a slight green/magenta color crossover. You can take minor influence by the dose of the Benzoetriazole, but can’t get rid of it completely. But I think this one may works a lot better than...

Concerning US 4366234, Wheatcroft et al. You don't have to cook cour own Hydroquinonemonosulfonate. Try an alternative FD, maybe that ZoneV” FD Tab water 750ml Calgon 2g Sodium-Sulfite 1g Metol 2,5g Sodium-Sulfite 21g Potash 14g Sodiumbicarbornate 12g Hydroquinone 6g Phenidon A 0,5g (solve in...

I would not try to get the rated speed from the (E6) film in conjunction with E1 process. That 80°F result looks really good, maybe go up to 85°F to archive 50 asa… The benefit of this kind of pull processing is (in my eyes) richer colors in the “middle” of the range. Really like your results...

If bracketing about rated speed, I would increase process temp close to 100°F. But you will get color shifts and speed/contrast variations anyway. That whole reversal process is a kind of a diva, minor aberrations in pH, restrainer concentration / or overall formulation will lead to colorful...

Congratulations again :smile: Are you still doing that process at 75°F ? 10 min. in the FD? Don’t think that the developer lost so much activity, the modern color films are simply designed for higher temperatures. You need the higher temperature for penetrating all the layers… I would...

@mshchem. May I ask what you mean by „numbers are barely visible“? Is your developed film to bright, or too dark?? Edit: uuups, too late... Anyway, phantastic results :) stefan

High there. Looks like a backlight / flare problem for me... Direct sun in conjunction with older lenses can give "interesting" results. Maybe some of the blackening in the camera itself is missing and reflects light to the film? All the best, stefan

Oh, you are probably right, processes above and including E2 used CD3 for sure. All the best, stefan

As far as I know CD4 used in “usual” C41 formulations is always xyz-methylaniline sulphate. But it must be kept under low pH (about 2) to keep it stable in a solution. “Usual” formulations are the three part mixes. The one part formulations (Prime for example) do have a much higher pH and use...

Wasn’t the color developing agent in Process E1 CD1 (N,N-Diethyl-p-phenylenediamine Sulphate) or a similar stuff? Genochrome (N,N-Diethyl-p-phenylenediamine Sulphite) maybe… It should be a pale, slightly pink powder. I used a few years ago a similar stuff, called “T-22”...

Dear sfaber17. My old ATL1 does not have this kind of offset; it’s basically a CPP2 with ATL head mounted on. If I’m dialing 38.4°C I get 38.4°C in the jacket bath. The temperature in the chemical bottles is about half a degree Celsius lower… CD1, CD2 and CD3 I bought from German suppliers...

Do you have access to citric acid? In Germany you can buy it in every drugstore, approx. 400 grams. Solve it to a liter of water, add a liter of spiritus (denaturized alcohol) and than add half a liter of a cheap bathroom/tilt cleaner (NO Clorox!!, just tensides/surfactants). In total 2 1/2...

@sfaber17 High there… I‘ve done quite a lot testing when doing these homebrews, the C-27 is a quite close approach, or better, simply a good working composition. But the usual pitfalls are remaining… Consistency of temperature is one of them. In the past I’ve used always two warm prewashes...

The reason for a possible shorter CD time during drum processing is quite an heavy impact of oxygene to the color developer, as far as I know.. This may give you a green shift due (slight) pH variation and reduced amount of Citacinic acid.That can lead to a slight contrast boost too...

High Mediumformat, I would use prolonged timings and lowered temperatures as proposed by photomemorabilia. Temperatures at about 75°F, as used for E3 / E2 processing do lower the need for a problematic prehardening bath as used for the E4 process regime. Hardener could be a simple chrome...