On several occasions I have seen that some images are previewed blurry in Bridge CS6.
I have set the preview to full resolution/quality, so this is not the issue.
When it happens, it happens like this:
1. I have a layered file, and the preview is good and sharp.
2. Then I sharpen, and the preview is blurry.
This has occurred numerous times. I thought the preview was corrupted, so I deleted the file, and hauled it back from the trash, so a new preview would be built.
Again, this new preview would again be blurry. (Out of 20 files, two had a blurry preview - and the files themselves were NOT blurry).
Flattening such a file does not help. While the flattened file is also sharp in Photoshop, its preview remains blurry. A copied file also has the blurry preview.
I don't see any correlation with image dimensions, file sizes. Some images just randomely are previewed blurry in Bridge CS6.
The only correlation I see is that it is ALWAYS SHARPENED IMAGES that are previewed blurry (the unsharpened versions always look much sharper in Bridge CS6)
What can I do to have Bridge CS6 preview ALL images correctly?
edit: I purged the cache for this folder, and the rebuilt preview is again blurry.
Even worse, now 50 out of 100 images have blurry previews.
How can I get previews that I can work with?
It might be worth updating your graphics card software. I have seen what you describe on occasion, but it's usually fixed by purging the cache for the selection and/or restarting Bridge. I haven't seen it for a long time now, which makes me think it's something to do with the way Bridge interacts with hardware/drivers.
I have a latest generation MacBook Pro retina, so that should be fine.
It actually worked when I purged the cache for this folder a second time. The blur went away.
The first time I had done a "select all" images to show Bridge which previews I needed rebuilt - not necessary, maybe that was an overload for Bridge.