Moire pattern in previews and upon export

[TanyaThree]

All of a sudden, all but one photos in my current folder started showing a magenta-green moire pattern, which is most obvious in gray areas. Going back to a previous folder that I looked at just before now has the same problem. I have been zooming in and out in the Library module a lot. I have not done any edits (other that lens correction and CA correction on import.)

An exported file (jpg, 1920X1440 px) also shows this moire pattern. 

I am using Lightroom Classic 14.2 on a Macbook Air 2020 with an M1 chip. The OS is Sequioa 15.3.1 (24D70). I am looking at HEIC (12MB, 24 MB, and HEIF Max) and JXL  (ProRaw Max lossy and lossless) photos from an iPhone 16 Pro.  All these file types show moire patterns.

Lightroom is curently using 6.8 GB.

Moire patterns in previews are frustrating and makes exports unuseable.

Here's the exported file and screen shot of the same file in the Library module:

 

  

[TanyaThree · Accepted solution]

Turns out that this is a problem with my phone (iPhone 16 Pro) not Lightroom. Happens when using the 1x (24 mm equivalent) lens close up - the objects are 8 to 12 inches away.  Not happy. 

[TanyaThree]

I found the Moire slider in the Masking module and it does a great job of removing the magenta and green colors. However, it leaves an equally noticable gray moire.

Feature request: Pleasae figure out how to adjust the relative luminocities of the two colors so that they look the same when the moire slider is used to remove the color -- advoiding a gray moire. Maybe you are using the perceptual color scheme (used when converting to B&W in Lightroom) when perhaps you need to use just RBG's luminocity instead or something like that.