Lightroom 2 & 3 Beta color, contrast WAY off on display 2

Lightroom 3 Beta 2 / Windows 7 64bit / Dual calibrated displays
Display 1 connections are HDMI out to digital in, display 2 is digital out to digital in.
PROBLEM
In both the Lightroom 3 Beta 2, and Lightroom 2 v2.6 632038, color, contrast and so on are WAY off on my number 2 monitor. If I drag a Photoshop CS4 window from the left display to the right display I see no difference, looks fine. This is also true with Picasa 3, and iMatch Digital Image Management software and preview images in Picasa photo viewer. The issue seems to be just with Lightroom.
I don't see any settings for adjustment of the Lightroom right hand screen in either version - Help appreciated, IM

If you want to, you could zero out all the settings and then save this as a preset and then automatically that preset to all imported images. Not really sure why you would want to do this though. All your images look pretty flat. The default settings do a fair job of approximating what you see on the back of you camera when you made the shot and give you a good place to start. I tried zeroing things out for a while, and then found out I was bringing every image pretty much back to the defaults, and so stopped doing that.

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Lightroom 2.2 Printing Problems...color is way off

I have had issues with printing in Lr but never really cared since I used Zoombrowser to print most of my stuff for "around the house" and everything always looked fine (even if I modified the image in LR and printed from Zoombrowser). The colors coming from printing in Lr were always way off when using my Pixma IP4300.
I just purchased a Epson 3800 and now I would like to start using Lr for printing. I have tried everything I know and the colors are still way off when printed from Lr. I selected the appropriate color profile in LR for the printer and paper type, I turned off ICC color in the printer setup menu and the color is still off. If I save the Lr photo and print from Zoombrowser then it looks perfectly fine (still turning off ICC).
Now that I have a nice printer I'd love to be able to print right from Lr as it would save me alot of time and significantly increase my options.
Thanks in advance for your help.
Joe
Btw...I am using Vista Ultimate 64

I doubt the reason that I didn't get any replies is because people assumed I didn't search. There is no way of knowing who did and didn't search the forums before offering to help someone.
I searched the forums and found no problems similar to mine using the same OS, printer and Lr version.
Here is my problem with some more detail:
I am using Lr 2.2 64bit, Vista Ultimate 64, Epson 3800 Pro (6.5 drivers), Premium Lustre Photo Paper.
Here is what I am doing.
1) When in Lr and ready to print I select the Lr profile as "Pro38 PLPP" which is the 3800 Paper profile that is in the list of available profiles for Lr.
2) I select Relative (perceptual didn't appear to change anything)
3) I click "print" then I am taken to the 3800 selection menu.
4) I click properties next to the selected printer, I leave everything alone except for "mode"...I chaneg it from Auto to Custom and then select No color adjustment. Everything else appears fine...the paper type is correct etc. But when print the photo the reds come out pinkish etc etc. All of the colors are pretty far off.
I reinstalled the 64bit drivers from epson and nothing changed.
Any ideas?

All my prints using: Lightroom 5, printer color management turned off, and non-generic ICC profile (e.g. Epson Premium Glossy) have magenta tint or cast

I'm using PC with: Windows 8.1, 64bit, Lightroom 5.4, Epson R3000, 6.75 (latest) driver, color management turned off in printer settings, Lightroom configured to manage color. If I use a generic ICC profile such as Epson sRGB, the prints look OK. But when I use any ICC profile dedicated to my paper and printer combination, such as Epson Premium Glossy, or one created using ColorMunki print profile, the prints all have a medium to heavy magenta tint or cast. The effect can be seen before I even print in the Epson Print Preview. Yet when I soft proof, I don't see this effect. I suspect the problem lies somewhere in the CMM process, but I can't pin it down. Any tips or suggestions are appreciated.

Thank you kindly for your insightful response. As it turns out, the answer is half correct. I've found others who'll say the same thing, that double color management will lead to a very magenta result. I believe this was certainly the case when I first started playing with the settings, Where I went wrong, is that after I corrected my settings by turning off printer manages color and letting Lightroom do the color management, is that the Epson Print Preview was still showing magenta with certain profiles. Not wanting to waste more money on paper and ink, I used the preview to gauge whether I was going to get a normal print or not. Then one day I ignored the print preview's magenta cast as a 'warning' and I went ahead printed the photo anyways. Because I used a profile that I created with ColorMunki Photo, the picture came out perfect (i.e. a very good match to what I was seeing in Lightoom on my monitor). The lesson learned is that for judging the final color correctness, the Epson Print Preview can be way off target and your best bet is to ignore it.

Adobe DNG converter is corrupting NEF files. The color is way off and it's not the camera white balance.

I was using the converter for a few months and it was working fine. Now it will convert the files, but the color is really messed. I know it is not the white balance, because the same files convert fine to TIF files through Nikon's software. I am using this converter for Nikon d610 NEF files. Here's a sample DNG and the same image in TIF. Can anyone help? Thanks!

When you use the DNG Converter to make a DNG from an NEF, the DNG Converter applies the default Camera Raw settings. When I open your DNG it looks fine, but when you open it, it looks off. That is because you've some how set your Camera Raw defaults to have a bunch of customized settings specific to a particular picture, instead of having them all be normal settings. Below you'll see what Photoshop is saying the settings of the DNG-Converted-JPG are, with the non-defaults marked in bold. The main problems are the WB being custom and a bunch of HSL setting changes.
Here is what Photoshop reports that the JPG was created using:
      <rdf:Description rdf:about=""
            xmlns:crs="http://ns.adobe.com/camera-raw-settings/1.0/">
         <crs:RawFileName>hug_8290_0215_1.dng</crs:RawFileName>
         <crs:Version>6.0</crs:Version>
         <crs:ProcessVersion>5.7</crs:ProcessVersion>
         <crs:WhiteBalance>Custom</crs:WhiteBalance>
         <crs:Temperature>5732</crs:Temperature>
         <crs:Tint>+26</crs:Tint>
         <crs:Exposure>0.00</crs:Exposure>
         <crs:Shadows>5</crs:Shadows>
         <crs:Brightness>+50</crs:Brightness>
         <crs:Contrast>+25</crs:Contrast>
         <crs:Saturation>-4</crs:Saturation>
         <crs:Sharpness>90</crs:Sharpness>
         <crs:LuminanceSmoothing>0</crs:LuminanceSmoothing>
         <crs:ColorNoiseReduction>25</crs:ColorNoiseReduction>
         <crs:ChromaticAberrationR>0</crs:ChromaticAberrationR>
         <crs:ChromaticAberrationB>0</crs:ChromaticAberrationB>
         <crs:VignetteAmount>0</crs:VignetteAmount>
         <crs:ShadowTint>0</crs:ShadowTint>
         <crs:RedHue>0</crs:RedHue>
         <crs:RedSaturation>+11</crs:RedSaturation>
         <crs:GreenHue>0</crs:GreenHue>
         <crs:GreenSaturation>0</crs:GreenSaturation>
         <crs:BlueHue>+12</crs:BlueHue>
         <crs:BlueSaturation>+2</crs:BlueSaturation>
         <crs:FillLight>0</crs:FillLight>
         <crs:Vibrance>-6</crs:Vibrance>
         <crs:HighlightRecovery>0</crs:HighlightRecovery>
         <crs:Clarity>0</crs:Clarity>
         <crs:Defringe>0</crs:Defringe>
         <crs:HueAdjustmentRed>0</crs:HueAdjustmentRed>
         <crs:HueAdjustmentOrange>0</crs:HueAdjustmentOrange>
         <crs:HueAdjustmentYellow>+1</crs:HueAdjustmentYellow>
         <crs:HueAdjustmentGreen>+5</crs:HueAdjustmentGreen>
         <crs:HueAdjustmentAqua>0</crs:HueAdjustmentAqua>
         <crs:HueAdjustmentBlue>-9</crs:HueAdjustmentBlue>
         <crs:HueAdjustmentPurple>0</crs:HueAdjustmentPurple>
         <crs:HueAdjustmentMagenta>0</crs:HueAdjustmentMagenta>
         <crs:SaturationAdjustmentRed>-2</crs:SaturationAdjustmentRed>
         <crs:SaturationAdjustmentOrange>+14</crs:SaturationAdjustmentOrange>
         <crs:SaturationAdjustmentYellow>+25</crs:SaturationAdjustmentYellow>
         <crs:SaturationAdjustmentGreen>+26</crs:SaturationAdjustmentGreen>
         <crs:SaturationAdjustmentAqua>0</crs:SaturationAdjustmentAqua>
         <crs:SaturationAdjustmentBlue>+32</crs:SaturationAdjustmentBlue>
         <crs:SaturationAdjustmentPurple>0</crs:SaturationAdjustmentPurple>
         <crs:SaturationAdjustmentMagenta>0</crs:SaturationAdjustmentMagenta>
         <crs:LuminanceAdjustmentRed>+40</crs:LuminanceAdjustmentRed>
         <crs:LuminanceAdjustmentOrange>+13</crs:LuminanceAdjustmentOrange>
         <crs:LuminanceAdjustmentYellow>+3</crs:LuminanceAdjustmentYellow>
         <crs:LuminanceAdjustmentGreen>+15</crs:LuminanceAdjustmentGreen>
         <crs:LuminanceAdjustmentAqua>+3</crs:LuminanceAdjustmentAqua>
         <crs:LuminanceAdjustmentBlue>+4</crs:LuminanceAdjustmentBlue>
         <crs:LuminanceAdjustmentPurple>0</crs:LuminanceAdjustmentPurple>
         <crs:LuminanceAdjustmentMagenta>0</crs:LuminanceAdjustmentMagenta>
         <crs:SplitToningShadowHue>231</crs:SplitToningShadowHue>
         <crs:SplitToningShadowSaturation>32</crs:SplitToningShadowSaturation>
         <crs:SplitToningHighlightHue>45</crs:SplitToningHighlightHue>
         <crs:SplitToningHighlightSaturation>33</crs:SplitToningHighlightSaturation>
         <crs:SplitToningBalance>+74</crs:SplitToningBalance>
         <crs:ParametricShadows>-39</crs:ParametricShadows>
         <crs:ParametricDarks>-7</crs:ParametricDarks>
         <crs:ParametricLights>-15</crs:ParametricLights>
         <crs:ParametricHighlights>+14</crs:ParametricHighlights>
         <crs:ParametricShadowSplit>25</crs:ParametricShadowSplit>
         <crs:ParametricMidtoneSplit>50</crs:ParametricMidtoneSplit>
         <crs:ParametricHighlightSplit>75</crs:ParametricHighlightSplit>
         <crs:SharpenRadius>+1.0</crs:SharpenRadius>
         <crs:SharpenDetail>25</crs:SharpenDetail>
         <crs:SharpenEdgeMasking>0</crs:SharpenEdgeMasking>
         <crs:PostCropVignetteAmount>-24</crs:PostCropVignetteAmount>
         <crs:PostCropVignetteMidpoint>50</crs:PostCropVignetteMidpoint>
         <crs:PostCropVignetteFeather>97</crs:PostCropVignetteFeather>
         <crs:PostCropVignetteRoundness>0</crs:PostCropVignetteRoundness>
         <crs:PostCropVignetteStyle>1</crs:PostCropVignetteStyle>
         <crs:PostCropVignetteHighlightContrast>0</crs:PostCropVignetteHighlightContrast>
         <crs:GrainAmount>0</crs:GrainAmount>
         <crs:ColorNoiseReductionDetail>50</crs:ColorNoiseReductionDetail>
         <crs:ConvertToGrayscale>False</crs:ConvertToGrayscale>
         <crs:ToneCurveName>Medium Contrast</crs:ToneCurveName>
         <crs:CameraProfile>Adobe Standard</crs:CameraProfile>
         <crs:CameraProfileDigest>51B4314CF8312BA027EF3FC60481FB35</crs:CameraProfileDigest>
         <crs:HasSettings>True</crs:HasSettings>
To fix the problem you're gonna need to reset your camera raw defaults:
And then be careful when saving new camera raw defaults with the menu item just above, that your image has the camera raw defaults applied to it, except whatever small change you want to be the new default.

Epson PictureMate and LR - colors are way off

Have the original 'toaster' PictureMate on Vista. The drivers are built-in and Epson's site doesn't have Vista-centric drivers for it, so I am good there I guess.
In the LR Print module I am able to choose the printer and adjust the properties of the printer through the printer driver/windows dialog boxes but cannot see where to turn off color-management. Leaving LR with 'let printer manage colors' just gives me muted, gray colors.
If I use LR to choose a profile just brings up an empty dialog box... so obviously there are not any profiles loaded with the driver?
Looked online for Profiles and couldn't find any.
Does anyone have any idea on how to disable printer managed colors OR how to get a profile for the PictureMate series?
Resorted to exporting and printing from Windows Photo Gallery which works, but extra steps...

Have you removed the print cartridges and cleaned the contacts both on the catridges and were they sit i the printer with a lint free cloth and some bottled water? If you have and that does not help the issue it would be time to upgrade that printer.
Although I am an HP employee, I am speaking for myself and not for HP.

Photosmart 8250 colors are way off

Photosmart 8250 has been a great printer for several years. (out of warranty now of course) I haven't had any paper or photo, 4x6, feeding problems at all, and have only had one paper jam. Lately the color printing has gone bad. I use only HP inks, never have used a "refill" in the printer. Lately I saw an error on the printers screen, it was about the paper sensor being faulty. I only saw this once. There also has been a small red blotch on the bottom edge of some of the prints, this is new, so I am pretty sure I need this printer serviced. It still looks new and has been without all of the other issues I read about I would rather have this one fixed rather than an exchange.
The paper sensor supposedly senses the type of paper and sets the printing parameters accordingly as I understand this so far. I have never taken this printer apart, but I have done so on other printers. Has anyone replaced a paper sensor in a printer such as this? Maybe its not a big deal, but then again, maybe its better that a tech that does it all of the time should do it?
Today is Sunday after Christmas, i will call HP support, this week but any advice in the meantime.
This question was solved.
View Solution.

The paper sensor is used when the paper type is set to "Automatic", you can override this by setting the paper type manually in the driver.
Bob Headrick, HP Expert
I am not an employee of HP, I am a volunteer posting here on my own time.
If your problem is solved please click the "Accept as Solution" button ------------V
If my answer was helpful please click the "Thumbs Up" to say "Thank You"--V

ID CS2 -- SNAFU colors print way off after PDF prints, color setting changes

I have messed things up on my InDesign pretty good. Working on ID 4.0.5 in CS2, with a corrupt Help file, on OS 10.4.11.
It started on a particular document after printing to PDF, something got tweaked and the colors went almost inverted (gray is pink or purple, green is red). Reading in the posts about RGB, CMYK, and color picker, I feel like that might have something to do with it but I don't know what happened. I did use the color picker (perhaps incorrectly) to match to my friend's PMS picks, but it didn't seem to just be that because it did print fine at one time. I THINK it was after the PDF. But now at least another important document is messed up, although not completely -- one small picture prints perfectly, but the main large image is off -- pink where it should be gray.
Fixes i tried that didn't work:
Went to Adobe Bridge and synched color
"Emulate Adobe InDesign CS2 CMS Off"
Monitor Color
any ideas?

I agree with Mylenium on this one. Check your application color settings and synch them. I briefly visited some tech info on that photo copier. Neither printer is Postscript compatable. Paper profiles are usually chosen in the Print dialog, not in the application. Read the User's Guides to those machines. Submit questions on output to them. Check adobe.com for color management white papers.

Color is way off when printing

Windows XP, LR 2.5. On the screen the document looks fine. When I print it is very blue & green, most of the other colors are gone. I print the same photo to a jpg. It looks fine on the screen and prints fine on the same printer. I send the photo (with adjustments) to Photoshop CS4, the colors are right, print to the same printer and it prints right. Only printing directly from LR is having problems.
Any ideas? Thanks!
Rich

I must just be missing something. I'm in LR in the Print module. Under Print Job I see Color Management, Profile: Managed by Printer. My only options are that and Other - and other wants me to choose a printer profile. I'm printing to a network printer (HP color laser). The only profiles I see are ones where I've installed the printer on my computer, like the Canon inkjet I have. Do I have to install the printer driver on my machine to change it?

Lightroom printing - colors way off

I searched through this forum for a known problem, but I'm at a loss...
My configuration :
Lightroom 2.0
Vista 32 bit
Epson R1800, using glossy paper
Downloaded the most recent drivers and profiles from Epson site.
In the printer properties, I switch ICM off, choosing color mode "Epson vivid" (or even tried "Epson standard", in LR I select the profile "SPR1800 PrmGls Photo" (there seems to be no profile for glossy paper and 'Best photo'.
Rendering intent : perceptual
Sharpening : standard.
So when I print, the colors are way off, photo is too light overall.
But when I try to turn it down in the develop module and print, colors are still way off.
Does anyone have any idea what I might be doing wrong / forgetting / ... ?
Thanks,
Phaedra

From your description of the problem it appears that you are confusing the R1800 and LR settings. In the print module on the bottom of the left panel is a button for printer setup (or some such words - I am working from memory). Click the button to set the printer. You should choose glossy as the paper type and best photo as the print option in the Epson dialog box. This is not a print profile. Also, make sure that ICM is off and no printer management is selected. That sets the printer.
Back in LR on the right panel near the bottom you should select your print profile which you apparently have installed. If it says "managed by printer" change the setting to the appropriate profile, in your case the SPR1800 PrmGls Photo profile. It should be the icc or icm profile (can't remember which) so check this also.
This should work.

JPG and TIFF colors in Bridge CS5 way off, but fine in Photoshop

Just started happening, but not sure if it was after updating to Bridge 4.0.3 or Camera RAW 6.2. The colors for RAW and PSD files are fine in Bridge, but all JPGs and TIFFs colors are blown out and way off. Opening the JPG or TIFF in Photoshop looks fine though. Anyone else having this issue, or know how to fix it?
Update: If I set the "Develop Settings" in Bridge CS5 to "Camera Raw Defaults" for the JPGs/TIFFs that are displaying improperly, the colors and tones go back to normal, but if I "Clear Settings" everything turns to crap again.

PLEASE help save my sanity and my reputation! --I have spent the last five days exhausting every possible solution to this debilitating issue. I have spent countless hours perusing the web for a solution, spent 4 hours yesterday with Adobe customer support and yet, there is no solution to be found. My issue is that the color (in every file format NEF, JPEG, PSD) completely changes color and desaturates in every one of the adobe products: Photoshop CS5, Camera RAW 6.2, Lightroom 3.2. -
Everything was working fine, and then out of no where my productivity has come to a crashing halt. This is the steps I have taken to this point:
-Uninstalling/re-installing all of the software
-Purging anything that can be purged.
-Changing color profiles
-Resetting defaults
-Resetting preferences
-Installing updated drivers for monitor, video cards
-rollling back drivers for monitor, video cards
-monitor recalibration
**and finally, today...I set the monitor up on another computer, OS windows xp, and to my complete surprise, the issue persists even on another pc with completely different hardware.
-I am at my wits end with this. I have clients ringing my phone off the hook. This is crazy!
-I have sent out for another monitor as a last ditch effort to see if something is wrong with the monitor.
PLEASE, if anyone has a solution please let me know. Apparently, the folks at Adobe are just as perplexed by these issues as we are, as I have found numerous posts on forums throughout the Internet with this same issue---and yet none of the post every found a solution.
Primary System
Windows7 64-bit
Nvidia fx 580 video card
Dell U2410 Ultra Sharp Monitor
Abobe CS5 Photoshop -64-bit
Lightroom 3.2
Camera Raw 6.2
Secondary
Windows XP
Nvidia GeForce 8400gs
Same software, just in a 32-bit

Colors in browser way off from what's viewed within Dreamweaver

I downloaded a 30-day trial of Dreamweaver on Monday, March 28. I finally had a chance to try it yesterday. I like it. There's only one thing: when I view my saved INDEX.HTML file by double clicking on it, IE and Chrome both show the colors as being terribly dark and way off. I racked my brain for over four hours yesterday trying to see what was happening. I even uploaded the file to my ftp site and used my IP address to view it that way (the site will have the domain name attached after it's completed). Same thing.
Last night I opened the INDEX.HTML file with notepad just to see what could possibly be wrong. There's a few lines of proprietary code from W3C or something. I deleted them and saved it. I double clicked on the file and when it opens, it's perfect.
What gives?

Thank you both for your replies. I get pissed because I get ignored on message boards when I ask for help. When someone asks how they can import a flower image into their site, they get 150 replies. I ask on guru about css classes and I get ignored.
I've been in the printing and publishing business since 1980 at the age of 12. I don't just surf Facebook all damn day long like everyone else abusing this technology. My monitors are top notch and so is my machine. My keyboard is an IBM from 1993 and I want it this way. Corel 9 is the best typesetting program in the world and CorelX4 sucks. I use Photoshop every day and can't find a use for Illustrator. I pushed Sitebuilder to the max and now I need more. I tried CoffeeCup and their graphics output to INDEX kicks Publisher out of the park.
I need to implement a Member Login so I bought a full license. DW can handle it and none of the others can touch it. My media license with AP announced that our thumbnail video players will be replaced by players that don't use Flash. They're lifeless but I have no choice.
So here I sit at the age of 42, putting together my weekly newspaper that was started in 2007. I don't have time to screw around. My message board nick is what it is because that's all I do all damn day long -- work. I'm getting married this August for the first time and I don't have any kids. My girlfriend is a virgin and 22 and hot.
I apologize for being a *****. I take my job and this technology seriously.
Why doesn't the weather bug show up on my page -- to the right of my flaglogo in the white box? http://96.9.48.31/
I noticed osgood left it in the revised code, but it still doesn't work after I sent it up to the ftp.
Thanks,
Kevin

Print color way off when stamp applied

I've got a strange problem that occurs when printing documents with a stamp applied to them (ie: Draft). Printing to a Ricoh 550EX printer which has its own hardware based color profile, we have to select "Let Printer Determine Colors" to get normal (un-stamped) pdf documents to print with the appropriate colors. However even with the "Let printer determine colors" selected stamped documents print with off shaded colors. By off shaded I mean bright yellow is printed with a green hue.
It is as if the adobe is ignoring tha switch when printing stamped documents. Anyone have any advice on how to correct this?
Problem appears in both Adobe Acrobat 9 and X. Printing to printers that do not have their own HW based color profiles works perfectly, so it seems adobe is not playing nice with the HW color profile. All other apps can print to the Ricoh without issue.
Thanks

Robert R Steele Jr wrote:
…Drivers are supposed to update through software update. Maybe I should check with Canon.
You must be thinking about video card drivers on the Mac. Those are indeed supplied by Apple. But printer drivers are the responsibility of each individual user.

Canon 5D Mark II Standard Profile - way off (reds)

This could also be in the Lightroom forum, but here is probably the better place.
I have always noticed that of all the cameras I ran through LR/ACR the Standard profile for the Canon 5D Mark II is way off in terms of reds. This mostly shows in shots that are underexposed and have tungsten light.
Adobe's Neutral profile is way closer to Canon's Neutral Picture Style. Adobe's Standard profile can yield very unpleasing skin tones with a red-orange cast that's at its worst in the shadow zones.
Here are some examples. ACR and DPP have Exposure set +1 and White Balance to "as shot".
ACR is in its default settings (Blacks 5, Brightness +50, Contrast +25, Medium Contrast Tone Curve).
DPP has the black point set to -4 to give a similar amount of shadow contrast.
Please note that on a browser without color management this might not look right and you might need to download the images.
ACR 6.1, Standard profile
DPP 3.8.2 Standard Picture Style
ACR Neutral profile
DPP Neutral Picture Style
Thomas

Yes, and I know what WB is also. And I know that different raw converters interpret the "as shot" wb exif data differently, and therefore there is no reasonable way to compare results without an explicit wb on a neutral object in the image within each raw converter.
I believe that in order to do valid comparisons among the different raw converters one should prepare a test image including a known reference, preferably the color checker chart. The raw image can then be run thru each converter with the first step being to wb on the second brightest neutral patch, and then (and IMO only then) one can do reasonable color assessments.
Richard Southworth
Added by edit - oops, I see Jeff jumped in, sorry to be redundant.

What happened to the Lightroom 5 Beta forum? Deleted, not archived or merged?

What happened to the Lightroom 5 Beta forum? I understand that LR5.2 is now in full release, but it would be nice if the Beta forum was locked and archived for reference. It seems to have been completely deleted, along with some detailed feedback by myself and other Beta testers. (I can't find it if it is archived, anyway.) None of my many, many LR5Beta forum contributions are listed in my "Content" tab in my Adobe profile. All of the links to the LR5Beta discussion in which I contributed to (such as http://forums.adobe.com/message/5271729#5271729 ) lead me to this message:
"Unauthorized
It appears you're not allowed to view what you requested. You might contact your administrator if you think this is a mistake."

Big thumbs up for Pete.Green and Daniel T! Thank you for this incredibly fast response! I worked very hard on explaining my "Advanced Adjustment Brush" proposal back in May 2013, and I am glad that it is again available for reference... in fact, even better, as it appears that the thread is now fully unlocked and availble to reply to. I still firmly believe this proposal is the way forward for Lightroom's local adjustment tools in the future. I hope that the remainder of the LR5Beta forums will eventually be brought back for reference.

A/B Color contrast in develop module

It would be really nice to hace a slider (or three, I'll explain) for "color contrast".
Threre is "contrast" slider that influences the luminosity basically. What I would want to have is a way to control color contrast while preserving luminosity as well as preserve color balance.
A single slider implementation
Basically the simplest way (but a bit crude) to do it would be with a single slider.
The slider defaults to 0.
Moving it to the right would be equivalent to the following photoshop procedure:
Change mode to LAB
Curve adjustment
Steepen both the A and B curves linearly (pull extreme points in and leave the curve straight, plus keep the center where it is to preserve color balance)
Leave the L curve alone
Apply
switch mode back to RGB
Moving it left would be the same, except the AB curves would be made shallower rather than steeper (rotate the curve clockwise instead of counter clockwise about the center)
A two slider implementation
Same as the above, except that you would have separate A and B sliders (you might call the tint contrast and temp contrast to be consistent with the color balance sliders, which are just like moving the center point of the AB curves)
A three slider implementation
Basically this is like having bothe the one slider ("overall color contrast") and the two sliders ("temperature contrast" and "tint contrast"). It's a bit redundant but having the single control there makes it easier when you simply want to globally increase the color contrast without being too picky about the two separate controls (I guess easier for beginners)

Not at all. The saturation control has quite a different effect that this, and much les subtle. Saturation just increases saturation without changing the hue. This actually changes the hue causing a separation in hues that is impossible to achive in any manuver you would to in RGB space. It drives colors apart rather than increasing their chroma.
Try it yourself on a few images (especially on images that have nearly uniform color, such as deserts or faces. You will see that this is an entirelty different thing than saturation.

Lightroom 2 & 3 Beta color, contrast WAY off on display 2

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