Lens Profile Tool Addition – White Balance Offset Correction

I have noticed that my Canon 17-40mm and 70-200mm F4 IS lenses have virtually identical color temperature and can use the same white balance setting. My Sigma 50mm F2.8 Macro lens is another story, requiring almost 200K and +15 change to White Balance sliders. I am sure there are cases where Canon’s lenses will differ more widely and exhibit a similar degree of white balance differences, not to mention use of UV or 1B protection filters. An 85mm F1.2 lens using “rare earth” low dispersion glass, will have a warmer color temperature than a lens using more common glass elements.
I use the X-Rite ColorChecker Passport to create custom profiles for each of my camera bodies. I typically make separate correction presets for Daylight, Cloudy, and Tungsten (2700K). This requires changing the LR White Balance sliders to obtain “neutral gray in the ColorChecker image files shot in each of above described lighting conditions. It does not appear necessary to create a separate ColorChecker camera profile for each lens, just correction to the LR white balance slider settings.
I did some measurements of change in camera profile for Sunny Daylight (~5,500K), Cloudy (8,000K+), and Tungsten (~2,900K) lighting. There was no measurable change in rendering of the ColorChecker Passport images for the extreme Sunny to Cloudy conditions, and only very slight changewhen comparing the Tungsten profile. This was done by loading a ColorChecker Passport image file and applying alternate profiles:
EXAMPLE:
Open a DaylightColorChecker Passport image file in LR, apply Cloudy Camera Profile, and adjust White Balance for the gray scale patches using the Eyedropper Tool. Then look at the 'Before' and 'After' images....you will see NO visual change to any of the color patches. I saw only a very slight change when doing this with the Daylight to Tungsten (artificial light source) comparison.
The relatively small change in color balance between lenses (~500K max.) should have no measurable or visible affect to the ColorChecker Passport created "Camera Profile." The ColorChecker Passport or any other "Camera Profile" creation tool is first and foremost correcting for differences in the camera's image sensor color rendering.
SUGGESTION:
Since this white balance difference is a factor of the lens, it would be very convenient to add another tool in Lightroom's and Camera Raw Lens Profile panel for “White Balance Offset.” This allows setup of LR defaults for one specific lens type, such as your most used lens. Then you use the new ‘Lens Profile’ located ‘White Balance Offset’ correction tool to adjust white balance for all of your other lenses. In addition, Adobe or camera manufacturers could also provide the 'White Balance Offset Correction' as a function of the lens spectral response deviation from linear. This would provide a "uniform method" of calculating and adding the White Balance correction to the 'Lens Profile.' Since this is a factor of the lens only, the “lens offset correction” can be used with ANY lens/camera body pairing, The current LR and Camera Raw White Balance settings are then only used for “Global” correction of lighting conditions, and NOT for lens differences.
This is a linear mathematical function,which should be extremely easy for Adobe to add the ‘White Balance Offset’ correction feature to LR’s and Camera Raw's Lens Profile GUI. Just like many other tools in LR that some don't use, you can choose to use it or not!

Interesting suggestion. Thanks. -Simon

Similar Messages

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  • Eye drop tool for white balance

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  • Lightroom Bug: with GoPro Hero4 Silver Lens Profile, crop settings do not sync properly in Lightroom 5.7.1 when Constrain To Warp is checked

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    Can you zip up a few of your GoPro images, upload them to dropbox.com and post a share link, here, so others can experiment with them, or do you mean this issue is global to all camera models?

  • How can i add the Sigma 10mm 2.8 Fisheye lens profile from the camera profile in windows to lightroom 5?

    It only seems to give me a 15mm fisheye option for Sigma and not the 10mm even though it is a profile in the camera profiles folder.
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    nickpearse wrote:
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  • White balance for infrared images

    Hello there,
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  • White Balance In "PS" Or In "LR"

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    Hello Everyone I have a question please.
    1- Shooting with my Canon 5D, Mostly shooting with Strobes, Usually I choose a Custom white Balance shooting a Gray-Card. Or some-times I set it at:  5200- 5500 K.
    2- Later I shoot a Color-Checker with the same Lighting that I shot my Images In that day, and I Import the color-checker Image into Lightroom.
    3- I select the Eye-Dropper Tool, and I choose a white balance by clicking on one of the neutral colors inside the Lightroom .
    4- I export the Color-Checker As a DNG file.
    5- I Drag and Drop the DNG file into the Color-Checker, and I save my profile.( I can also export it as a Preset of Color-Checker from File-Export-Preset- Color-Checker Passport )
    6- I go to the Photoshop and I go to the Camera-Raw, and Open the Images and I apply the preset Manually to each Image one by one.
    Here Is my question:
    some people say: It Is better to go to the Lightroom and export the Color-Checker as a preset and later apply the Eye-Dropper Tool for White Balance..
    And, Some people say It Is always better to apply the Eye-Dropper Tool for white balance at first Inside the Lightroom and then export the color-Checker as a preset.
    and some other people say It is better to export the Color-Checker as a Preset and open it Inside the Photo-Shop Camera Raw, and then Click on the White Balance Eye Dropper Tool Inside the Camera Raw, and select the white Balance and then save It as the final preset and apply that preset to the Images..
    I worked with Photoshop for many years, But, I am very new to Lightroom.
    Please let me know what is your recommendation.
    Thank you very much

  • Why does my infrared custom white balance not load into Lightroom or CameraRaw?

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    You are absolutely right.
    I thought I had upgraded properly, but I had not.
    Ran the updater again, and success.
    Thanks again.
    Steve

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