Very dark monochrome thumbs and display images

[Nhojdrib]

Hi
I have changed to a new monitor and I now find, inexplicably, that scans look fine in Photoshop but in PM the thumbnails are dreadfully dark and the full size previews not much better. Any ideas what is going on? Ive tried changing colour profiles but makes no difference.
Thanks

[Kirk Baker]

I have changed to a new monitor and I now find, inexplicably, that scans look fine in Photoshop but in PM the thumbnails are dreadfully dark and the full size previews not much better. Any ideas what is going on? Ive tried changing colour profiles but makes no difference.

Changed color profiles where?

It looks like your TIFF files don't have much, if any, EXIF information.  Which means that the image isn't specifying a ICC color profile.  What do you have your default color profile set to when it cannot be determined?  (Preferences-Color Management)

-Kirk

[Nhojdrib]

Thanks Kirk! Your comment set me thinking and I realised that the troublesome images had been scanned in b/w but I had forgotten to convert them to rgb. PM displays b/w images darker than rgb ones. I don’t know why that is the case but I have noticed it before!
John