Exposure jump with use of Spot Removal Tool on Lightroom Classic

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  • Updated 4 months ago
Using 2 "color separation guides" to photograph flat artwork on a wall, one above & one below, once all my adjustments are made, I use the Spot Removal Tool to eliminate them. Nothing happens with the removal of the top one, my exposure gets lighter with the removal of the bottom one. Happened on all images with similar set up. No changes in any of the numbers but a clearly brighter image with a visible change in my curve. Working on 5DMk3 RAW files. LR Classic CC v7.1 Win7 x64
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Etienne FROSSARD

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Posted 4 months ago

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Todd Shaner, Champion

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Please post screenshots of the 1) original image file, 2)  image file with Spot Removal applied, and a screenshot of the Spot Removal panel settings. Thank you.
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Etienne FROSSARD

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Thank you, here they are. EF
(Edited)
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Johan Elzenga, Champion

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I'm not sure what the problem is. Yes, the images are clearly different, but so are the settings in the Basic panel. The original image is brighter, but it does not have any adjustments. The retouched image is darker, but it has -30 Highlights and -0.35 Exposure. The Presence sliders have also changed. So what's the problem? Are you saying that this happened without you doing that yourself?
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Etienne FROSSARD

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To make things clearer, I am going to post the image as it was during my processing immediately before using the Spot Removal Tool and immediately after. What I was saying was that the image on my screen looked brighter after having used the Tool, confirmed by values measured on the image itself while the various numbers visible in Tone and Tone Curve did not change.  
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Todd Shaner, Champion

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Nothing happens with the removal of the top one, my exposure gets lighter with the removal of the bottom one.
We need to see screen shots for the above two Spot Removal operations with no other adjustments applied:

1) Top color separation guide removed, but not the Bottom one.

2) Both Top and Bottom color separation guides removed, which you say is lighter
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Etienne FROSSARD

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Ok, THANK YOU. Since I did not check if that pb happened with "no other adjustments applied", I will have to 'isolate/recreate' that sequence. I will take care of it tonight.  
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Johan Elzenga, Champion

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Check that you haven't applied any Dehaze. The effect of Dehaze is calculated over the entire image, so removing a large dark spot of an otherwise very light image may indeed have an effect when Dehaze is recalculated after that spot removal.
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Etienne FROSSARD

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THX. I had applied a 'little' +2 (two) Dehaze and will check if that might have been the problem.
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Todd Shaner, Champion

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In the latest screenshots a 3rd Spot Removal application is showing. It may be nothing or it may be the cause of the what you're seeing. Create a Virtual Copy, delete it, and see if the image changes.

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Etienne FROSSARD

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Here a similar image, part of the same series, with not that additional spot removed on the left, overall Dehaze at Zero, only top removed on the first photo. 2nd is right after bottom chart removed, clearly brighter.... But I had applied some Dehaze to the top ONLY of the image with Graduated Filter so I will explore getting rid of that and everything else as suggested earlier. THX again