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Converting (inverting) negative to positive in Lightroom

Aug 4, 2008 7:49 PM

Does anyone know of a way to convert a negative image (typically a B&W or even color negative photographed on a copy stand with a high resolution camera and macro lens)to a positive image in Lightroom?
We make a lot of these exposures from exisitng negatives and would like to automate the process in lightroom as it would faster than working in Photoshop.
Thanks,
Doug Abdelnour
 
Replies
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    Aug 4, 2008 9:30 PM   in reply to (Doug_Abdelnour)
    It's much easier for B&W than color.
    Here's what you do:

    Lightroom v2.0:Develop Module

    Under the "Tone Curve" Panel, next to the Point Curve drop down menu, choose "negative".
    That will show you how it's done for B&W. With color, you'll need to futz around with the HSL sliders to correct for the orange mask.

    Or you can photograph your color negatives with a matched bluish-green light source or CC filter to mitigate the orange mask before digital capture.

    Hope this works for you. :-)
     
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    Aug 4, 2008 11:52 PM   in reply to (Doug_Abdelnour)
    Nunatek - are you sure? I hadn't noticed this negative option before, and just checked and can't see it.

    Doug, the way has always been to adjust one image in Bridge and dragging ACR's point curve so it's a negative. You then import the picture into LR and save the preset, ticking only point curve.

    John
     
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    Aug 5, 2008 3:11 AM   in reply to (Doug_Abdelnour)
    I think nunatak is thinking of Adobe Camera Raw!

    There are some presets available at http://inside-lightroom.com/point.php, that are negative curves, you can then adjust parametrically from there.
     
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