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 :-)

Similar Messages

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.

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

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.

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

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

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

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.

I have lost my "Basic" panel in the Develop module and can't figure out how to get it back. My right panel goes from the Histogram straight to the Tone Curve panel. My Basic panel should be below the Histogram. Any ideas how to get it back. I have even

I have lost my "Basic" panel in the Develop module and can't figure out how to get it back. My right panel goes from the Histogram straight to the Tone Curve panel. My Basic panel should be below the Histogram. Any ideas how to get it back. I have even uninstalled my lightroom and reinstalled it with same issue. Help!!!

Right click on or near one of the other headers and a pop-up will appear and you will be able to select the Basic Panel for viewing.

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.

I was processing pictures and the Basic function on the right has disapeared ( the one that has Exposure etc) I know see the Histogram, then Tone Curve, HSL/Color/B

I was processing pictures and the Basic function on the right has disappeared, the one that contains Exposure, Contrast etc. I now have only the Histogram, Paint Brush etc, then it goes to Tone Curve, HSL/Color/B&W and all others down to Camera Calibration. How can I recuperate Basic ?? Thanks for your help

i have now found where the OS permission is located but cannot find a way to change it. Here is what I have done:
- Selected the Local Disk Folder
- Chose File>Get Info
- Click on Sharing and Permissions (It shows Read Only)
Now this is where I am stuck, the instruction in Apple Support says "Select a user or Group from the Name Column then choose the following Pop-Up menu in the Priviliges column(this is where the Read &Write option should be. I can't choose a user or group under the name column, all I have in the Name column is "Local Disk"
Can someone help me from here to convert to Read & Write, thanks

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:

Which do you prefer: Increasing exposure or adjusting the tone curve?

I'd like to know how people here handle their images.
I use a Nikon D7100 in camera RAW. In camera my images are always in balance. In LR, if I select Auto Tone in Basics invariably it will adjust the exposure. I tend to adjust exposure near last in my workflow because I assume my camera had the exposure setting right. When I feel I need to adjust the exposure my first stop is the Tone Curve. I'm wondering a couple of things:
1) I know we edit by the specifics of each photo, but generally do you make adjustments to Exposure or the Tone Curve first?
2) Is there a reason or a time to prefer one over the other?
Thanks,

My recommendation:
(note: I am interpreting "exposure", in your question, to mean "dynamic range at right wall of histogram", i.e. white point)
Adjust basics exposure first (before tone/point curve), but note: you may not be able to go all the way using the exposure slider. Next stop (if necessary): +whites, but note: it may not be optimal to go all the way using whites. Final stop (if necessary): cinch in the the exposure by dragging white point to the left via the point curve.
Rationale: basics have some intelligence and magic that tone curve does not. If you do tone curve first, you've missed some opportunities..
Still a begging question: how much exposure vs. whites vs. tone curve (point curve).
Note: go easy on the contrast at first, and assure blacks are sufficiently seated using blacks slider (and maybe tone/point curve).
Likewise, cranking whites up will increase global contrast, so if you take a shot at blacks and whites before contrast, then you may avoid a common mistake: radically wrong contrast due to adjusting before establishing ballpark black & white slider values.
Anyway, be aware that increased PV2012 exposure (and/or whites) is designed to be used with -highlights (note: there is no "brightness" slider), and to avoid making things too washed out (or over-jamming the highlights) it may be desirable to substitute +whites and/or +shadows for some +exposure.
Note: tones may gang up (on the right side of the histogram) in a non-optimal way when using +exposure and/or +whites, in which case it may be better to use point curve for white point adjustment (e.g. leftward drag). For example, sometimes the whites will be overly compressed if you don't bring white point in on the curve instead.
Rules of thumb:
Most of my normal photos end up with:
+exposure (to fully brighten)
+whites (for full dynamic range without excessive exposure setting)
-highlights (for dialing back +exposure and/or +whites)
+shadows (so -blacks and doesn't leave image with overly dark shadows)
-blacks (for full dynamic range without needing as much contrast)
*contrast: depends - if overly contrasty to begin with (or a lot of -blacks and/or +whites are employed), this usually gets dialed back; if underly contrasty to begin with (or +blacks and/or -whites have been employed), this usually gets bumped up.
(for abnormal photos or when desiring abnormal results - anything goes..).
Other common mistakes (in addition to wrong contrast and/or non-optimal balance between exposure & whites..):
trying to recover highlights via -whites. try -highlights (and maybe +whites) before -whites.
Warning signs:
if you have very high values for +shadows and -highlights, you may have contrast set too high.
if you have a positive value for highlights, you may have contrast/exposure/whites too low.
if you have a negative value for shadows, you may have contrast too low, or blacks/exposure too high.
Miscellaneous:
Try +clarity and +saturation (and/or +vibrance) to pump it up, if reduced contrast and/or increased exposure has left it looking a little washed out.. (likewise, -saturation if +contrast has left it looking a little too "rich"..).
You already know this, but for the sake of completeness (and other readers): you can learn by clicking 'Auto Tone' "button". You may need to dial back the exposure afterward etc. but it can be very educational none-the-less..
Of course, you can always fine-tune tone using tone curve (e.g. if image is just way overbright, like some snow shots, try tugging the midpoint downward..).
Don't forget the locals for final spot toning.
In case you haven't gleaned yet, adjusting via PV2012 is not the same as you might think at first - you don't just set exposure/black/white points and leave them, and then adjust everything else. e.g. -highlights pulls white point down more than -whites does (but +whites brings white point back up, which means you usually need to adjust in tandem..), so be prepared for a lot of back n' forth, to lessen with experience..
PS - There are tutorial videos galore, but at the risk of opposing Adobe and their sycophants, be forewarned: some are geared to how they wished PV2012 was (simple), and not to how it really is (interdependent image-dependent settings..) - examples:
top-down is touted, but that ignores black/white point issues which can lead to radically wrong contrast (and/or exposure) setting.
often, adjustment of blacks is considered optional/fine-tuning, but blacks sometimes need large value adjustment, and dramatically impacts contrast & shadow brightness..
often, adjustment of whites is considered optional/fine-tuning, but sometimes optimal toning can only be had by using a large whites value adjustment, which dramatically impacts contrast, and exposure..
cteavin wrote:
I tend to adjust exposure near last in my workflow because I assume my camera had the exposure setting right.
In case not clear yet, adjusting exposure and/or whites (and/or white point on curve) and all the rest is often done to turn an image "with potential" into a very nice image, not just to compensate for in-camera exposure imperfection. I have lots of under-exposed images that end with -exposure (granted, usually +whites), and vice-versas.. That said, if you don't know whether to crank it up or down, there is something to be said for passing until you do..
Lastly, for emphasis: exposure slider is an intelligent slider. It behaves more like normal exposure adjusters at lower values, and more like brightness adjusters at higher values (has clipping protection and highlight roll-off logic which kicks in as you crank it up..). So, it's a mistake to think of adjusting it just to make up for non-optimal camera exposure setting.
Sorry for verbose answer, but there is really no short answer which doesn't run the risk of being bad advice: best way to adjust "exposure" depends...
Cheers,
Rob

Tone curve RGB histogram visibility

Similar Messages

Maybe you are looking for