Tone curve RGB

I am trying to alter individual RGB channels within the tone curve box, but I don't get a pop up dialoge box. I saw a mention of PV 2010 and PV 2003, but I don't know what these are, or if one can convert to them.

Look in the camera calibration panel and it will tell you. Alternatively, if you're seeing the current set of sliders in the basic panel (e.g. highlights, shadows, etc.) then that would confirm you're using PV2012.
Go to tone curve, click on the little curves button at the bottom, and you'll be in point curve mode. Click on the RGB button to choose a colour channel.
As you're on the web, I recommend searching for "process version Lightroom" to find out more about that side of things.
M

Similar Messages

  • Tone Curve RGB does not show up

    I am using Windows 64 bit and there is no RGB choice on the tone curve. 

    Have to be in point curve mode and have to be in PV2012.

  • Tone curve RGB histogram visibility

    Hi all.
    I installed lightroom 4 Beta this afternoon and quite liked the addition of the individual RGB colours adjustable in the improved Tone Curve interface (Develope module), but feel the actual histogram colours of Red, Green and Blue are barely visible. Can you guys at Adobe improve this please?
    Thanks,
    Kevin.

    I'd like to add that this is the Mac version, but I doubt it really matters :-)

  • Custom tone curve

    When I adjust RGB values on the curve (eg I pull down the blue to warm things up a bit) the "linear" in the option menu below the curve changes to "custom". When I then change the tone curve to medium or strong contrast, it nicely obeys and thus so, but what then surprises me is that the Blue curve in the RGB settings is again totally flattened out...does it retain the prior adjustment or does it just ignore it ? I only noticed just now on a relatively ok picture so it's easily enough to check but still it's odd that an earlier slider adjustment seems to disappear.
    Anyone who can enlighten me on this ?
    Tx. Frederic

    Not sure if I understand. Let me try to explain my workflow : usually i start with camera profile (i'm a landscape guy) then basic panel tweaks,color temp if needed, a bit of the cool shadows/highlights, some blacks,clarity etc. then perhaps a graduated filter or lens profile...i hardly ever use the contrast slider (I never liked it in previous LR versions and haven't really touched it now) - BUT then my next move usually is to fool around with the tone curve, before (LR3) mostly via the sliders, now (LR4) mostly via the presets (linear,medium,strong) because I get confused between highlights/whites in BP then highlights/lights etc in TC panel, so I don't bother with those sliders in the TC panel anymore and I just click the presets. Now at long last back to my question : sometimes I try to use the new tone curve RGB to correct a blue tone or so, and then the preset name changes into "custom" and at the same time the curve nicely slopes the way I nudged it. When I then click on one of the presets in tone curve to L,M, or Strong the curve readjusts again.if I then check back on RGB blue channel again there is a nice straight diagonal as if nothing ever happened but the color tone seems to be preserved..net net it seems to do the right things to the pictures but the curve tells something different and that's what I don't get...
    Sorry for the all the talk but I don't know how to explain it better. Perhaps I should just post a video of the dam thing.
    Cheers. Frederic

  • LR4.1 - Tone Curve - how to adjust individual RGB channels?

    Hi,
    I am having trouble figuring out how to adjust the curve of individual RGB channels.  I am assuming the LR4 Tone Curve works like the PS Curves dialog with the channel dropdown.
    The LR4.1 Help says:
    To make adjustments to individual points on the tone curve, choose an option from the Point Curve menu, click the Edit Point Curve button , and do any of the following:
    Choose an option from the Channel pop-up menu. You can edit all three channels at once, or choose to edit the Red, Green, or Blue channel individually.
    When I click the little icon in the lower right corner of the Tone Curve panel, the panel shrinks so that I don't see the Regions sliders.  If I click again, they are visible again.  I can't find where to select one of the three indvidual channels.
    The Help refers to "the Point Curve menu."  Where is the Point Curve menu?  Is the Point Curve different from the Tone Curve?
    If I right-click (Windows) in the curve dialog, the context menu has a Show Info option.  I click it on/off and don't see any change or any info.  Where should I be looking for info?
    Thanks for any help here.
    John

    Good morning John,
    The point curve is the one without the sliders. The adjustments for the individual channels are only available with
    PV2012. You must be editing a file with PV2010 or 2003. When in PV2012 you will see " Channels:   RGB" below the curve window. Click on the doule triangles following the RGB
    to pick the individual channel.
    HTH
    Rich

  • Feature Request: RGB Histograms / Tone Curves

    Hi team,
    It would be really helpful to be able to view the RGB Histograms separately in addition to a composite (rather than the "compact" mode we have now).
    It would also be really helpful to be able to adjust the Tone Curve applied to an individual RGB channel in Develop.
    Finally, it would be most helpful to be able to see the RGB values as well as or instead of the RGB percentages when moving the cursor over an image area.  This would be particularly helpful for fine-tuning skin tones.
    Thanks, and keep up the great work.
    We're delighted you're evolving Lightroom!
    Cheers,
    Matthew

    Your post seems to assume that Lightroom is a tool for travel/landscape photography, and other types of photography (e.g., portrait/fashion) should be supported by a "specialized add-on module". I have to disagree with you on that point. Considering many of the examples on the Lightroom marketing are fashion shoots, I would think that they considers portrait/fashion photographers to be an important part of their target audience. They are not a fringe group of specialists.
    I'm sure that portrait/fashion photographers would feel the same way about a Lightroom capability that primarily benefits the workflow of a travel/landscape photographer, i.e., when I do do some landscape work, I just edit in Photoshop. But you wouldn't agree to that, would you?
    Skin tone measurement can be an incredibly easy tool to implement. It can be something as simple as showing the CMY values alongside the RGB values during a mouseover. Keep in mind, I'm talking about CMY not CMYK, so there should be no need to worry about what ICC profile to use. RGB to CMY is a straightforward transformation. It's embarassingly simple.
    There are other ways Adobe can implement skin tone management that would be more powerful but a little more complicated. Those would be great too.
    Anyway, thanks for the link to the Adobe feature request page! I will use it.
    Regards,
    Mike

  • Camera Raw - Enable RGB Tone Curves

    In Camera Raw, the Tone Curve Channel selection is disabled.  How can I enable it to allow me to adjust specific colors in Camera Raw?
    I’m using Photoshop CS5, Camera Raw version 6.7.0.339 on a Windows Vista 64 bit system, and my camera is a Nikon D90.
    Thanks,
    Jack

    I don't think you can...ACR 6.7 was a crossover version tho have compatibility with LR 4 when it was released, as a result it was set to allow processing of certain features that were in LR 4 (and ACR 7). While the RGB curves show up dimmed, I don't think ACR 6.7 allows actually adjusting the RGB curves. I think the only way to get them is update to CS6 and ACR 7.x.

  • RGB Channel unavailable in Camera Raw under point in the Tones Curve

    How can I use the the RGB channel in Camera Raw under Tone Curve?

    Hi yariel83,
    Make sure under the Camera Calibration tab that the Process is set to 2012.

  • Does the Tone Curve operate in RGB or Lab?

    I was wondering if the Tone Curve of LR works in the RGB color space, or if it is designed to only affect the L component of Lab.

    (Andrew_Rodney) wrote:
     This new PDF might be useful to the discussion too:
    http://www.luminous-landscape.com/essays/Curves.shtml
    Looks like the file has been removed. Does anyone have a copy or another link?
    Been fighting with some images recently, getting yellow faces when increasing contrast (curves or slider).

  • New RGB Tone Curve also a Basic Levels Adjustment?

    Adobe Staff: at first I was pleased and then let down about the new RGB Tone Curve feature because I thought it allowed for Levels Addustments - as with so many other photo editing software including Adobe PS Elements where you can squeeze in the left and right triangles to ajust the blacks and highlights and midtones.
    I was playing with the Lr4b RGB curve yesterday and - is it correct that it does essentially act the same as "Levels Adjustment" by squeezing inwards the blacks (lower left) and whites (upper right) points?
    Thank-you

    Yeah, but blacks and whites in the basic panel are better, and usually should be applied after you've appled the others.

  • New RGB tone curve is absent in my LR4 upgrade. How do I get it to emerge?

    help please

    Click on the little curve icon at the bottom right-hand corner of teh Tone Curve panel. See screenshot:

  • Tone Curve Channel Histograms

    Just a small piece of feedback - the new tone curve individual channels are great, but the histogram in the background of the curve is very difficult to see. Any chance you would consider increasing the opacity of the red, green and blue? The RGB is more visable.
    Many thanks.

    This is a very valid point and would make a great feature request. You should consider submitting it through the official channels (no pun intended) http://feedback.photoshop.com/photoshop_family/products/photoshop_family_photoshop_lightro om put your idea here and I will vote for it.

  • LR 2.7 bug: Tone Curve is ignored in Develop module during loading

    I have found a problem that occurs after upgrading from 2.6 to 2.7. It probably wasn't existent before, but now I am not sure.
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    Hi Dan,
    OK, so now I'm confused... I have removed the profiles for the monitors (one for each) and now use the manufacturer supplied one and haven't been able to get a crash since yesterday when I did the change. I'm not 100% confident the bug has gone, but it's passed my "it should happen by now" criteria. I'm wondering if the size of the .icc profiles could have an influence. When I calibrate my monitors, I always do a full calibration which stores the data as a full LUT iccview.de lists it as:
    Description Tag:
    Monitor_2_17-03-2011
    ICC-Tag: BToA1 (Colorimetric)
    Calculation: LUT with 35937 grid points
    Header:
    size = 690296 bytes
    CMM = 'APPL'
    Version = 2.4.0
    Device Class = Display
    Color Space = RGB
    Conn. Space = XYZ
    Date, Time = 17 Mar 2011, 15:50:32
    Platform = Microsoft
    Flags = Not Embedded Profile, Use anywhere
    Dev. Mnfctr. = 0x0
    Dev. Model = 0x0
    Dev. Attrbts = Reflective, Glossy
    Rndrng Intnt = Perceptual
    Illuminant = 0, 1, 0 [Lab 100, 0, -0]
    Creator = 'LOGO'
    Total volume of gamut is 885574 cubic colorspace units
    The profile I have moved to and which seems to be working is a much smaller matrix profile. iccview.de says:
    Description Tag:
    DELL U2410 Color Profile,D6500
    ICC-Tag: XYZ Matrix
    Calculation: 3x3 Matrix
    Header:
    size = 6756 bytes
    CMM = 'ADBE'
    Version = 2.0.0
    Device Class = Display
    Color Space = RGB
    Conn. Space = XYZ
    Date, Time = 1 Mar 2010, 14:15:19
    Platform = Microsoft
    Flags = Not Embedded Profile, Use anywhere
    Dev. Mnfctr. = 'DELL'
    Dev. Model = 0x534654
    Dev. Attrbts = Reflective, Glossy
    Rndrng Intnt = Perceptual
    Illuminant = 0, 1, 0 [Lab 100, 0, -0]
    Creator = 'DELL'
    Total volume of gamut is 1401609 cubic colorspace units
    So, assuming I get no more crashes, how do you want to debug this further? Do you want my icc profiles?

  • Brush mode: Tone curve, etc

    Well, I'm new for LR, I'm trying to tweak a certain part in the photo by using Tone curve and else, but I don't think the LR would allow me to do that in the "Brush Mode", am I correct?
    Because, I need to change some parts in the photo by increasing only red or green or blue, or even highlight and shadow, but I can't do that like Aperture in Mac. Or I do miss any feature control panel in the LR?
    Seem like the LR would not give flexibility when working in Brush Mode, is this correct?

    mrkavin wrote:
     ...but sometime it's frustrated when stuck with the LR limitation along the way while the other can do.
    I understand.
    When I first tried Lightroom (1.4), I was a bit disappointed with the scope of the develop tools available (and did not buy it). When Lightroom 2 included Clarity and Locals it was a big improvement (and I bought it and started using it along with Nx2 & DxO & Photoshop), but it still seemed lean compared to some raw converters (Nx2 as example). I mean, what Lightroom does it does well, for the most part, but full-featured develop tools can not really be touted...
    Lr3 is known as the release when Lightroom became a true professional-grade development tool in my opinion: image quality + lens corrections. I applaud Adobe's decision to do just that. No more front-ending with DxO or Nx2 or DPP or CaptureOnePro, or Photoshop + Noise Ninja... I love Lr3 .
    Still, I'm hoping Lr4 is known as the release when Lightroom comes of age, develop-module-wise... (distraction removal, more locals, signature auto-masking technology, better color adjustment including rgb curves, ..., and of course fixing of highlight recovery). No more doing without or frequently processing with a pixel editor after basic adjustments in Lightroom... If they do this, I will really-really love Lr4 .
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    R

  • DNG PE: I want to try other Tone Curve but ...

    In DNG PE I load a dng file, I choose a camera profile, I go in the Tone Curve panel in the Base Tone Curve I set Linear, I click on the curve and I set in 95 out 160 (only one point for this purpose) and then I save the new profile.
    I go in ACR, I load an image and I switch to new camera profile: the image become very light.
    I launch the DNG PE, load the previus created camera profile, click on Show Tone Base Curve: the showed curve is not parent with that I created (95 in 185 out, see below in black what I have created, in red what the profile has registered)

    Hi Marco,
    This is mostly (*) possible, but not directly via the DNG PE. The issue is the encoding space. Your RGB tone curve that you describe above is defined in a gamma 1.8 space (since ProPhoto has a gamma encoding of 1.8 ). The (black) tone curve interface in DNG PE is defined in a gamma 2.2 space.
    In other words, if x is a linear signal and x' is the transformed linear signal, then the math for the former case is effectively
    x' = x ^ 1/1.8
    x' = ApplyToneCurve (x')
    x' = x ^ 1.8
    whereas the math for the latter case is the same except for the use of 2.2 instead of 1.8.
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    Once you have the actual numeric curve worked out, one way to make the required tone curve is to edit the .dcpr (recipe) file from the DNG PE using a text editor.
    (*) The reason I say "mostly" is because another detail is that the PS RGB tone curve is a 1D curve applied separately to each channel. This is not the way the tone curve works in Camera Raw.

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