Originally posted by Weevil Ho wow ! I did not realized that they would merge 4 photos in one like this and keep the size that big!
Wondering if there is an easy way to filter them in grid mode (using metadata option)
Unfortunately Lightroom doesn't sort on file size. And the camera doesn't designate "PSR" or something in the file name. And the PS mode is noted in the metadata, but it's non-standard and hence sorta hard to get at.
So the trick is to ID them and then get that info into a more usable place, like filename, keyword, etc. I use Photo Mechanic to do it; I'd highly recommend it but it's overkill for some. You could use regular filesystem tools probably.
But if you wanna do it in Lr I'd recommend John Beardsworth's List View plugin, €10.00 at
List View – Lightroom Solutions (there's a demo). You can add "size" as a column and then sort on it. Select the big 'uns, and then make a collection, rename 'em, keyword 'em, whatever. I like to assign a label as well so I can quickly ID them in a bracketed set.