John, Your description of the problem seems eerily similar to what happened on my old Mac Mini when the I/o controller chip began to draw its last breaths.
The repair was getting a new Mac Mini. I never could recover most of the full-size images (I had erased the cards). Rick > On Jan 16, 2023, at 11:08 PM, John Sessoms <[email protected]> wrote: > > For some reason all of my scanned film images will only show up the > thumbnails on this computer. > > The files are 4053x2680 DNG (TIFF?) files created with VueScan 9 64-bit using > a Nikon CoolscanIV saved natively as DNG by Viewscan. > > I have them stored on my home-built file server. I have a second copy on my > NAS box and they show up the same way > > When I try to look at them using either "photos"(the Windows 10 photos app), > FastStone Image Viewer or IrfanView64 they show up as 242x164x24 BPP 29.2MB > images. "Info" from FastStone & IrfanView both have the correct image size, > but both just open the thumbnail. > > I also tried copying the images to the local hard-drive, but I only get the > thumbnails copied. > > The digital images from my cameras show up at full size. So far it's only > affecting the DNG files I created in scanning slides & negatives. > > I think this might be a Windows 10 problem. > > I checked them using my Photoshop computer which is still running Windows 7 > and they show up full size in Bridge, Camera Raw, Photoshop & IrfanView 64. > > FastStone Image Viewer did show the same thumbnail sized images on the > Windows 7 computer. > > > > > -- > Vivere in aeternum aut mori conatur > > -- > This email has been checked for viruses by AVG antivirus software. > www.avg.com > -- > %(real_name)s Pentax-Discuss Mail List > To unsubscribe send an email to [email protected] > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to [email protected] to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

