Quicklook (preview) thumbnail is black in column view on macOS 15.4

sh1n123 wrote:

It's unthinkable that such a MAJOR issue isn't yet solved.

For those in desperation, open in quicklook (space bar) and minimize the image on the trackpad, it will appear.

Apple fix this ASAP.

You don't seem to have read this thread, particularly the part where people say it has been FIXED in 15.5.

I am not seeing this on my mac.

Does it also occur if you do this is in a new user account on the same mac?

If not, then the issue is restricted to your usual account. You could try deleting Finder preferences:

To delete Finder preferences: 1) In Finder, press Command-Shift-G and paste ~/Library/Preferences/com.apple.finder.plist 2) Drag the file to the trash 3) Press Command-Option-Escape to open the Force Quit window. Select Finder in the list, and click Relaunch.

Indeed, downloaded and installed OS 15.5 this morning, and the issue is solved.

UPDATE: the newest 15.5 OS corrects this issue :D

I have exactly the same issue; just moving a little bit the "Quick-view" Window o the Finder Window the Preview appears. And it is only with LEICA DNG; my old canon pics do not show this effect.

Sequoia 15.5 has fixed the black .NEF files for me on an M4 PowerMac! Yay!

You're right! The first is black, but you can fix that with 'wiggling' the width of the thumbnail. But if you then select the second (on top of the first), by holding the shift key down, and the third and the fourth, etc. you will get the visible thumbnail every time.

Simple bug indeed, but let's hope it gets fixed soon, because it's really annoying.

Update to Sequoia 15.5 solves the issue.

It IS fixed by updating to Sequoia 15.5.

'It' (I assume you mean dragging the column a little?) only works for one picture at a time. The next one in the column is black again. But my QuickView allows me to view each and every picture (although the thumbnail is black) one by one. So I select the top pic in the column, press the spacebar and get a view of my RAW file, then I simply press the down arrow on the keyboard.

(CR2 files from a 7D Canon)

I've reported it to Apple and hope the issue gets fixed soon. As I stated in a previous post: my wife and I are losing lots of time trying to find the picture we want to develop.

I noticed that while the problem persists with most recent updates, its not all my old raw images. DNGs from a very old Pentax Q show correctly. But DNGs from an old Pentax 645Z show black, and I have to use the resize method. Since the Q produces very small images, while the 645Z does medium format, I wonder if it's related to scaling and the size of the image. In any case, it should be fixed.

The good news is it made me switch to Fast Raw Viewer instead of the Finder for any search for or preview of an image. MUCH better than either the Finder or Bridge for browsing images. And, as it says, fast. Shows a histogram too, which is super handy. Well worth the small cost.

Y'all I just updated my mac and they fixed the problem!! I can view CR3 files now in quickview and they're no longer black screens!!

I bet all these suggestions have been tried; at least I tried them, even in a different account and on two different Macs (well... the same model and the same OS version, i.e. the most recent one) the issue is still there. We shut down our Macs every night.

Looks like we'll have to wait till the following update (to 15.5, I mean). I have reported the bug to Apple Support.

This issue may be related to a bug in the macOS 15.4 update. You could try restarting your Mac or resetting the Finder preferences to see if that resolves the problem.

Me too. Ugh! Quick Look appears broken in 15.4 when trying to access CR2 files. (So much for the old workflow.) Problem persists when testing in a new account. Am still able to view and edit files within Lightroom.

Prior to finding this thread, tried a variety of steps--none of which helped.

Relaunched Finder

Force Quit Finder

Force Quit Quick Look Processes

Cleared Cache

Rebooted

Tested in Safe Mode