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Participant
September 12, 2013
Question

How to convert a colour negative to a colour positive

  • September 12, 2013
  • 1 reply
  • 17629 views

I have photographed some colour negatives in RAW.  I would appreciate an outline of a process as to how to convert these to positives using Lightroom v5.  I have tried and failed!

Hope some one can assist - Tony (New Zealand)

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    1 reply

    Todd Shaner
    Legend
    September 12, 2013

    Film scanner software with negative film color profiles will give the best results, but you can get good results using just LR. Do a Google search using the two keywords Lightroom and negative.

    September 13, 2013

    Seriously? Why bother writing a reply and not just telling him how to do it? This is another form of “It depends.”

    Here's how to do it:

    • Go to the Tone Curve and make sure that the curve is flat (linear).

    • Drag the bottom left point of the curve to the top left. (Hold down the Shift key to make dragging easier.)

    • Drag the top right point of the curve to the bottom right.

    Done.

    Side effect: After doing this, adjustments such as Exposure will have the opposite effect of what you expect.

    MadManChan2000
    Adobe Employee
    Adobe Employee
    September 13, 2013

    A workaround to the "side effect" is that you can round-trip the file.  That is, apply the "inverse" tone curve described above and then export the file as a TIFF.  Then, re-import that TIFF and do further work on that TIFF.  Basically the first step does the conversion from negative to positive.  Then after that you have a positive to work with, and the Develop controls behave normally.