P: New AI-powered Lens Blur (Early Access) available across all surfaces.

I love the new feature, but it would be even better if it was more costumizeble.  Sometimes it doesnt determine the depth correctly. Eg. a small part of a subject is determined to be further away than it is, or a random thing in the background is determined to on the same deepht as the subject and therefore remains sharp upon applying lens blur. 

And that makes it obvius that its AI generated blur. So if the feature makes a small mistake, the tool is completly unusable, cause it looks weird.

I suggest you add a feature where you can, in addition to the "focal range" slider, can mask out the subject manually with a brush. 

This functionality adds convenience to my workflow, but I've encountered an issue. When applying the lens blur effect, the file size of my image significantly decreases. To illustrate, after completing all my edits, I'm prepared to export the final image as a PNG with a size of 24MB (5472px * 3648px). However, when I apply the blur as the last step before exporting, the PNG file size drops to 13MB (5472px * 3648px). Does anyone know where to look or what might be the problem?  My OS is MacBook Pro 2020, with Sonoma and Intel Iris plus graphics card

I tried lens blur for the first time (Lightroom Classic on Desktop). When i selected "apply" it crashed the program and rebooted my computer. I tried a second time - same result. I'll stay away from it until it settles down!

Would be nice if you could apply to more than one image at a time.  It shows it works for auto sync, but when you select the other images it isn't applied. It is listed in the hostory of the image.  Also, it is sooooo slow.  Not sure how others are getting it to work quicky.  Refining takes a long time and it gets hung up. 

I love it and while the automatic depth detection is works pretty well, it would be great if the refinement sliders were a bit more specific. Right now we have a particular "blur" or "focus" amount slider and some standard brush settings. I don't know what everyone else thinks, but I'd love to be able to pick a specific "focal range" and paint some pixels to assign them to it. I just had to drop this effect from my picture completely because I couldn't find the right way and values to refine it.

So far this feature is excellent. Would love to see it applied as a batch process, even if a mask is required. Once you can apply this in batch, like the adaptive options, this feature will be fantastic. 

Love the new Lens Blur feature in Camera Raw.  Saves a lot of time!

Improvement to the blending of the blur to the non blure image. Using on a portrait for boka in the background, there is to sharp of a line where the subject meets said background. I then have to manually try to blend the subject to the background.

Die neue Funktion "Objektivunschärfe" in PS ist super, ein echter Mehrwert. Habe sie nur schnell ausprobiert, aber die Ergebnisse überzeugen auf ganzer Linie. Es wäre schön, wenn man die Einstellungen speichern und auf eine Serie anwenden könnte.

Good evening, currently, I have identified the following issues related to the Lens Blur function when using the Develop mode in LrC (I always use dual monitors, the PC is an HP Zbook with a 17-1265U CPU, 32 GB RAM, 1TB SSD, Intel Iris + NVIDIA T550 GPU with 4 GB dedicated memory and 16 GB shared). Often, I have perviously created masks, for example, for background operations:

• Sometimes the blur analysis phase ends with a message stating that the operation could not be completed due to an issue. From that moment on, the situation often repeats, and the only way to resolve the problem is to exit LrC and re-enter. This happens after applying several blurs to various photos. I have observed that sometimes simply exiting and re-entering LrC is not enough; waiting for some time (waiting for the PC's resource manager to show low RAM, inactive GPU, and minimal CPU usage) seems necessary. It could be a resource management issue where allocated resources are not released.
• Occasionally, after one or more lens blur operations, a spinning wheel appears near the view mode selector. When this wheel appears, the photo selection in the preview area no longer works (it works for the navigator selection area, works for the second monitor loupe area, but not for the active view of the reference area, i.e., it stays on the last edited photo). The only way to resolve the issue is to exit LrC and re-enter.
• After applying a Lens Blur (selecting Apply) and then activating depth display, sometimes when I select Blur and start brushing back and forth in an area I want to blur, the system becomes unstable, manifesting the following symptoms:
• For a few seconds, the LrC window turns black; sometimes, a message appears asking if I want to terminate LrC or wait (I usually wait for the system to recover); I've noticed that in this situation, the CPU is always at 100%.
• Alternatively, I lose control of the brush; it is impossible to select other commands, and areas of blur that I have never selected are chosen.
• Similarly, when selecting Light Spot.

Often, I can no longer control the situation and have to exit LrC and then re-enter.

I hope this information can be helpful in improving this very interesting feature.