Color Shift adjustment for 90D

[PeterMars]

I am struggling with how color shift correction works. First I shoot a RAW image, then open in Adobe Camera RAW, As Shot. And no matter what I have the Color Temp set at in camera, it always shows a different value. AND the real problem is that the TINT is always up around +19 Magenta and needs to be around +22. I have tried adjustments in the "WB Shift" menu but I cannot figure out what is really happening. I can find no info online that explains how to test for and correct any bias my camera sensor has. Right now I am simply guessing by looking at many shots of various items.

If I set the WB to 5500K the Camera shows something like 6400K "as shot" Why does Camera RAW not show the actual camera settings "as shot"? I have no starting point to evaluate what the camera is doing.

I'm trying to calibrate the camera so I can accurately evaluate LED lighting I am using. Just like my monitor, calibration is essential to getting accurate color.

[Waddizzle]

I suggest that you contact Adobe regarding your issues with image imports.  Apparently, Adobe is not reading the EXIF data properly for one reason or another.  Have you tried using the Adobe Color Space in the camera?  Just a long shot.

Meanwhile, I suggest that you consider buying the X-Rite ColorChecker [**bleep**].  You can biuild a Color Profile for your specific cameras.  Instead of selecting "Adobe Standard", the name of your camera will appear.  If you calibarate your monitor, then you would want to calibrate the color reproduction coming off of your image sensor.

[PeterMars]

I will purchase the ColorChecker... thanks for your input.

I have not tried the Adobe Color space. Overall I am functioning OK with all this but I do feel there is an issue with calibration of the sensor which I need to understand. Not too worried about Blue/Yellow color temp slider, but the Magenta/Green slider is where I believe I have an issue. I think the camera may be a bit too Magenta. Not sure how to determine that. Opening in Camera RAW is not helpful because of the wild numbers it throws up. If I shoot a neutral white foam core board, and set exposure to around the middle on histogram, Camera RAW shows a magenta setting of +19 and the image is slightly magenta. Moving the slider to green removes the cast but slider still at around +15'

I just do not understand what the Color Info in Camera RAW is actually telling me about the image.

[Waddizzle]

Does this happen with other camera bodies, or is it specific to your 90D.

Adobe has to make a best estimate of how Canon processes their images.

[PeterMars]

I had 2 40D's but sold them recently... currently also own an 80D and I think it does the same. Can't remember exactly but similar.

[Waddizzle]

If you still have the images, compare what Canon's DPP software says.  Test it on the 90D files, too.

[PeterMars]

Weird... I have replied 3 times to this with updates and none of them are currently showing? I have spoken with Adobe and Canon and had posted what I found out. Yes, I checked photos from both the 80D and 90D with DPP and they are fine. The 80D opened in Camera RAW and LrC both report the correct Color Temps as shot.  ACR only having a problem with 90D

the Adobe tech support person said hopefully they will address this in the next ACR update... I wont hold my breath!

What happened to my earlier post replies?

[jrhoffman75]

Welcome to the forum.

Following is my understanding. Others should join in as well.

When you set a white balance setting in the camera all you are doing is adding a tag in the RAW file metadata. The actual RAW file data and histogram are unaffected by any WB you select. You are simply recording what you believe the color temperature of the light to be.

When you select As Shot in ACR you are telling the software to use the file data as-shot to compute the white balance of the image; it will do its best io render a neutral image.

See this discussion at https://fastrawviewer.com/white-balance-as-per-channel-exposure-correction

[This link is okay, so we edited it to be clickable.]

[Waddizzle]

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@jrhoffman75 wrote:

Welcome to the forum.

Following is my understanding. Others should join in as well.

When you set a white balance setting in the camera all you are doing is adding a tag in the RAW file metadata. The actual RAW file data and histogram are unaffected by any WB you select. You are simply recording what you believe the color temperature of the light to be.

When you select As Shot in ACR you are telling the software to use the file data as-shot to compute the white balance of the image; it will do its best io render a neutral image.

See this discussion at https://fastrawviewer.com/white-balance-as-per-channel-exposure-correction

[This link is okay, so we edited it to be clickable.]

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"If I set the WB to 5500K the Camera shows something like 6400K "as shot" Why does Camera RAW not show the actual camera settings "as shot"? I have no starting point to evaluate what the camera is doing.

John, I do not experience his problem.  When I set 5200 in the camera, I get 5200 in Lightroom.  Maybe there is a difference with ACR, or ACR needs to be updated.

I agree with you.  When you select "As Shot" the file data is what should be used.  Apparently, this is not what is happening.

[jrhoffman75]

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@Waddizzle wrote:

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@jrhoffman75 wrote:

Welcome to the forum.

Following is my understanding. Others should join in as well.

When you set a white balance setting in the camera all you are doing is adding a tag in the RAW file metadata. The actual RAW file data and histogram are unaffected by any WB you select. You are simply recording what you believe the color temperature of the light to be.

When you select As Shot in ACR you are telling the software to use the file data as-shot to compute the white balance of the image; it will do its best io render a neutral image.

See this discussion at https://fastrawviewer.com/white-balance-as-per-channel-exposure-correction

[This link is okay, so we edited it to be clickable.]

---

"If I set the WB to 5500K the Camera shows something like 6400K "as shot" Why does Camera RAW not show the actual camera settings "as shot"? I have no starting point to evaluate what the camera is doing.

John, I do not experience his problem.  When I set 5200 in the camera, I get 5200 in Lightroom.  Maybe there is a difference with ACR, or ACR needs to be updated.

I agree with you.  When you select "As Shot" the file data is what should be used.  Apparently, this is not what is happening.

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I think you are correct Waddizzle; I misunderstood what I read about the import action.

But therer does seem to be something possibly going on with the .CR3 files. There is some sort of battle going on between Adobe and Canon. There are no camera specific profiles for cameras with .CR3 files later than the 5D Mark IV  and the R5.

here is a screenshot for a 1D X Mark I.

DPP shows that WB was set to Tungsten.  1D X manual says Tungsten is 3200K  LrC says 3200 As-Shot.

Here is a screenshot for a file from the 1D X Mark III.

LrC reports a different value.