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  1. #1

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    Extending E6 Colour Dev time?

    hi, could anyone explain to me what the effect of extending the colour developer stage of E6 processing? I'm sure I've heard people mention before that they use 6 minutes instead of the recommended 4 minutes suggested by Kodak – of yes, I'm referring to the Kodak 6 bath kit here.

    Whilst I'm very happy with the results I'm getting with my Kodak E6 results it would be nice to know what's going on with this stage – I've been using 4mins 30 secs for colour dev (although why this is I can't really remember!)

    Thanks
    Dav
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  2. #2
    tiberiustibz's Avatar
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    Kodak recommends 6 minutes for the color developer, except when using a rotary tube processor. This goes to completion, so there's no harm in going over in the development. Too little development will give you a low DMAX and pale faded slides. Since the rotary tube agitates constantly, it will develop a little bit faster. That's all.
    --Nicholas Andre

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    Thanks Nicholas, I should of mentioned I'm using an Jobo Expert drum on a CPP-2 so I suppose the lesser time is OK. If you say it doesn't matter if I go over the time and it'll have no effect it would probably be better if I extend the time.
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  4. #4

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    As Nicholas say it's process to completion so as long as your temperature is good, time shouldn't matter too much. If your temperature is way off though there are no guarantees. Kodak lists this step as having a range of 98.6-102.2, so it's not as sensitive as First Developer. If your having problems with the process most of the time it's the First Developer (range is only 99.9-100.9)- or your not mixing Color Developer properly (Part A & B etc..).

  5. #5

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    Thanks domaz, thankfully I'm not having a problem – it's just good to know the effect of changing the time, and that it's not critical for the colour dev. My temperature consistency is good with CPP-2 so everything is within about 1/2 a degree.
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  6. #6
    wildbill's Avatar
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    where does kodak recommend 4 minutes for jobo? I've only processed a few batches with my 5L kit in my jobo but I've been using 6 minutes for normal development. 5 minutes for N-1/2 (one batch) turned out perfect.
    www.vinnywalsh.com

    I know what I want but I just don't know how to go about gettin' it.-Hendrix

  7. #7
    tiberiustibz's Avatar
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    Quote Originally Posted by wildbill View Post
    where does kodak recommend 4 minutes for jobo? I've only processed a few batches with my 5L kit in my jobo but I've been using 6 minutes for normal development. 5 minutes for N-1/2 (one batch) turned out perfect.
    We're talking about the color developer. The color developer has no effect on push/pull settings and should always be left at the full 6 minutes (4 minutes with a jobo) no matter the B+W developer time.
    --Nicholas Andre

  8. #8
    Mike Wilde's Avatar
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    Quote Originally Posted by tiberiustibz View Post
    ... The color developer has no effect on push/pull settings and should always be left at the full 6 minutes ....
    I have seen instructions from EK for a 3 stop push, and it recommended diluting the CD. My reference books are not at hand to give the details.
    my real name, imagine that.

  9. #9
    tiberiustibz's Avatar
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    Quote Originally Posted by Mike Wilde View Post
    I have seen instructions from EK for a 3 stop push, and it recommended diluting the CD. My reference books are not at hand to give the details.
    That's probably to compensate for the really high contrast a 3 stop push produces. You'd still be losing DMAX though. Traditionally it's all first developer.
    --Nicholas Andre



 

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