LR5 on Win7: Spot Removal tool brush does not resize quickly or smoothly.

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  • Problem
  • Updated 6 years ago
When holding down the bracket keys to make the brush bigger or smaller, the brush resizes in large, jerky movements. The brush continues to resize after releasing the bracket keys. Consistently reproducible.

Steps to reproduce: Open an image in the Develop Module and access the Spot Removal tool. Move the mouse over the image and hold down one of the bracket keys (for a few seconds) to resize the brush. Observe the movement of the resizing action. Release the bracket key and continue observing the brush resizing. While you're here, simply move the mouse around the image and note how slowly the pointer moves.

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Steve T

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Posted 6 years ago

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Simon Chen, Principal Computer Scientist

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Yes. It is known that lens correction will slow down the spot healing. The reason is that spot healing processing step happens very early in the camera raw processing pipeline. Rendering changes necessitated by the spot display updates need to cascade all the way from the beginning of the pipeline to the end. Thus it is a more expensive operation. From the workflow point of view, it is preferable to perform spot healing early in your workflow. If you start noticing slow down while doing spot healing, you can temporarily turn off sections of processing to get it back to speed.

When the slowdown happens, do you typically have a large number of existing spots or some large brush spots?
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Bill Young

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I have a similar problem, mostly with larger areas of brushing. Nothing this noticeable in LR4 applying brushes after applying lens correction. No changes to the system. Win7 64bit, i7 processor and 8G RAM. Why the problem with LR5?
Having disabled lens corrections, the problem does go away however.
I started working on images in LR4.4 and batch applied lens correction as one of the first steps in the workflow. Now I'm cleaning up details after final selection. As a result, your selected workflow doesn't help since I don't want to spend lots of time cleaning up an image that won't make the final selection from a group. I want to apply lens correction and crop, then apply adjustments after LR has adjusted for lens exposure roll-off in the corners. It would be impossible to do otherwise in many situations, e.g. wide angle lenses.
This response by Simon begs the question of how many other issues are known about, along with the cause, and how are users to find out about them all, especially those that might affect workflow.