Ghost appears when using local adjustment tool

DxO PhotoLab
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Found following odd behavior with PL9.

When using control point a ghost phenomena appears behind many objects. See images:

  • Image 1: Image is ok as long as the mouse button is not pressed.
  • Image 2: A ghost image appears and the resolution drops as long as I do press the mouse button.

This makes it difficult to make adjustments. The same occurred when using other local adjustment tools.

Prior to this, predefined AI mask (background) was applied and the selection refined by reducing area of background.

Has anybody else experienced this?

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It matches the people in the image, looks like a mask may have shifted position. Can you post the same image and turn on the mask display so the location of each of the two masks can be seen ?

1 Like
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… and shifted with different vector, depending on position. Plus this strange highlighted strip at the bottom with jagged black boundary.

Interesting, never seen anything similar before. Couldn’t reproduce it in PL9.3.2/Win.

On #2 (the one at the top – you got image order reversed during upload, btw) there’s a jagged black line and highlighted strip at the bottom, sax seems to be part of another CP, all heads having ghost duplicates, plus a lot more strange artifacts. Looks like luminance shifted but with different vector depending on location. The chair in bottom left makes any guesses even more difficult.

Some questions:

  • Just to be sure, did PL or Win restart help?
  • Did you apply any geometry corrections, like Horizon or Perspective, while editing LA masks (and when exactly)?
  • Which version of PL (9.3.2?), which graphics card and driver version were used?
  • Anything relevant in PhotoLab.txt log?
  • Can you share exact steps to try to reproduce on another image or share your raw and dop file?

Maybe GPU has hit some resource/power/temperature limit and became erratic???
But then why only on pressing the mouse button?
Looks more like a graphics card problem (hardware/cables/software) but who knows?

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Yep; My guess is that the masks were selected then the image was straightened (rotated via Horizon tool ?).

Perspective changes should be made first, before masking.

3 Likes
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Perspective changes should be made first, before masking.

That’s good to know, as I didn’t know it previously. Thanks.

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To clarify:

The ghosts and low resolution prevail only as long as the mouse button is pressed for moving the sliders. After releasing the button, everything looks great again. This means I can not see the change until I stop adjusting.

Another nuisance is that the outcome file after using NIK, is way smaller than when rendering the same image from PL8. NIK output jpg quality is set to 100% in export settings and NIK preferences. Something again I have to learn.

If my original NEF and DOP files are of interest, I can send them as an attachment to this chain. Pls. indicate if needed.

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Yes, please!

I’ve been experimenting a bit, and the mask only shifts if I accidentally touch and move it, or if I apply perspective corrections afterward.

But so far, I haven’t observed what you’re describing:

The ghosts and low resolution prevail only as long as the mouse button is pressed for moving the sliders. …

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But so far, I haven’t observed what you’re describing:

The ghosts and low resolution prevail only as long as the mouse button is pressed for moving the sliders. …

Screenshot 2 (with arrow) is taken while mouse bugtom is pressed down. When the buttom is Release, the image return to perfect as Screenshot 1.

The arrow shows that a control point has been placed on the banjo players face and the cursor is set on “Exposure” while adjusting is going on. As soon as the button is released we have a exellent image.

I will come back with the files tomorrow.

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Do you have “Enable high quality preview “selected in the Display tab of Preferences? if not, select it.

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Sample image should be found in this link.