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  1. #11
    Photo Engineer's Avatar
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    The ECN processing kit is indeed huge, and in addition it does not keep very well once opened or mixed. It is not as stable as the C41 chemistry. The cross processing of ECN films in C41 chemistry will give very poor results compared to the correct process.

    PE

  2. #12

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    Guess after I buy the chemicals, I should rebottle them to smaller bottles to prevent oxidation.

    Below are some of the images taken on 250D and cross processed in C-41 Fuji chemistry. Scanned using V700 with epson scan software. I suppose these colours are too muted by compared to a ECN-2 development? Athiril, did you get similar colours like these? I hope photographers here can post some photos taken on Vision 3 film and developed in real ECN-2 process. Saw alot of discussion but very little pictures.







    The following photo was taken with tungsten street lights. The non yellow/orange appearance makes me think that C41 process altered the colour balance since I used a daylight vision 3 film.

  3. #13
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    Your results are excellent comparatively to what I got with 50D, there is no comparison, I got an unusable, unscannable, unprintable image riddled noise and artefacts due to how close the dMax and dMin were together.


    Mixed developer is supposed to last 2 weeks in a floating lid cover according to the manual (vs 4 weeks for flexicolor), would imagine at least as long in sealed bottle with no air (mixed flexicolor is supposed to last 6 weeks in 'gas stoppered' bottles). It won't last this long 'out of the box' so to speak just by mixing it from kit parts like Flexicolor does iirc.

    Keep part B topped up with an inert gas of some kind. I copied the first one, a slight balance change improves it.



    In regards to your images, they are just slightly off balance.

    You don't need the whole kit, usually just the developer.
    All recipes are also in here inc developer - http://motion.kodak.com/motion/uploa...h247_h2407.pdf

  4. #14
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    The ECN developer contains no stabilizer, but the C41 developer does. This means a very short lifetime for the ECN developer! It can go bad in even stoppered bottles as the mixing process has entrained oxygen in the water. Watch out for it!

    PE

  5. #15
    Athiril's Avatar
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    The ECN-2 developer uses sodium sulphite to protect against oxidation iirc, I've added HAS to it, and it didn't make a difference to the 'very short lifetime', there is another missing item for that.

  6. #16
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    I have tested ECN-2 developer aging twice. First time, it was fine after 6-8 months but totally dead after 12 months. Stored in full/squeezed PET bottles at room temperature (~23C). Second time, I stored it in an open container (deep tank) with some saran wrap on top. It was surely fine after a month. Didn't test it after that.

    So, it SEEMS to last as well as C-41 developer at least for me, but I may have been lucky; better be safe than sorry.

  7. #17
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    C41 developer uses HAS and Sulfite to stabilize it against oxidation. The ECN developer has no HAS. In comparison tests, the ECN developer should have roughly 1/2 to 1/4th the stability wrt aerial oxidation. The developer concentrates should have the same lifetimes in either case.

    The color developer part is packed under Sulfur Dioxide gas and if you don't believe me, give it the old sniff test when you open it. Once open, that gas is gone and the best you can do is use dry nitrogen to TRY to protect the developing agent. Once it turns coffee colored (either concentrate or working strength) then the developer is probably dead.

    PE

  8. #18

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    Quote Originally Posted by Mustafa Umut Sarac View Post
    I think your C41 developed vision film scans are not good , even terrible.

    Write to Technicolor Labs and try to open an account. As someone wrote at first link in the thread , it would cost only few dollars to get a development in most technologically developed lab in the world.

    If you keep taking this kind of pictures , dont blame the film and try to buy few ansel adams catalogs and find what can be the photograpic art.

    Umut
    Thank you for the advise, will write to them about it. Another issue is that I reside in Singapore, thus shipping 1-2 rolls may not be feasible.

    As for the photographic content, they are not competent photographs artistically speaking. Pardon for that. I am showing to see how are the colours in relation to real ECN-2 process when I asked for more photos of real ECN-2 process.

  9. #19

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    Quote Originally Posted by Photo Engineer View Post
    C41 developer uses HAS and Sulfite to stabilize it against oxidation. The ECN developer has no HAS. In comparison tests, the ECN developer should have roughly 1/2 to 1/4th the stability wrt aerial oxidation. The developer concentrates should have the same lifetimes in either case.

    The color developer part is packed under Sulfur Dioxide gas and if you don't believe me, give it the old sniff test when you open it. Once open, that gas is gone and the best you can do is use dry nitrogen to TRY to protect the developing agent. Once it turns coffee colored (either concentrate or working strength) then the developer is probably dead.

    PE
    By the way, what is the long form for HAS? I could not search the full term online.
    I will rebottle the chemicals to smaller containers, however as you have mentioned, oxygen will get in nonetheless during the rebottling process. Assuming I rebottled it and used dry nitrogen to purge out the air from container, any indication how long will it last when it is unmixed (Part A and B separate) condition?

  10. #20
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    Have you seen this posting:

    http://www.apug.org/forums/forum40/5...lm-stills.html

    It gives a DIY formula for ECN-2 developer. Last I checked you could get CD-3 at Artcraft:

    http://www.artcraftchemicals.com/pro...chemistry/a-m/

    Not sure how that works from Singapore, though.

    It's on my list to try after some of my current projects have run their course. And I find a can of daylight ECN-2 film for a reasonable price (aka cheap) on the big auction site or something. Or, curiosity gets the best of me and I just go for the tungsten balance.

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