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digital photo weirdness

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shmokes:
Some of my photos have started acting really strange.  The thumbnail in Windows Explorer is just a black rectangle.  If I try to open the photos in any program other than Photoshop they simply don't show up.  But if I open them in Photoshop they show up perfectly fine.  However, if I make changes to the photo in photoshop and re-save them the problem persists.  They are .tif files.  Any idea what might cause this?  They have been fine for years, and about 2/3 of the pictures in the folder are still fine.  But about 70 photos are doing exhibiting this strange behavior.

Bobulus:
I can think of several possibilities...

- Photoshop could be saving them in a .tiff format that windows doesn't like, so any photos you've edited recently are acting like that.
- If you hard drive was currently on the way out, you could be getting random file corruption.

lilshawn:
try one or more of the following......


.....Delete 'thumbs.db' , a hidden file.

.....Right-click the image file, and choose Refresh thumbnail

.....Try resetting the folders via Folder Options View tab. This should reset the thumbnails assigned for all folders. You can customize the folder views again.

.....Turn off thumbnail caching via Folder Options View tab


RayB:
tif?!?  Are these photos you took in 1992?

Sorry for the sarcasm, but tif is a bloated ancient format. If you want to save them in a non-lossy format, use 24bit PNG, or even windows BMP is better than TIF. I'd even recommend TGA over TIF, but stock Windows does not show thumbnails for TGA.

Could also be a sub-type of TIF that is no longer "liked" by Windows (did you upgrade to Vista or 7 recently?). I remember TIF has 2 or 3 options, like RLE encoding, etc. Maybe one of those options is no longer supported as standard.

shmokes:

--- Quote from: RayB on June 16, 2010, 02:44:10 pm ---
tif?!?  Are these photos you took in 1992?


--- End quote ---

You're a decade off, but they are old pics.  2002. 

I did a bit of investigation and all the ones that don't work have a 32-bit color depth and the rest are either 24-bit color or 8-bit black & white.  I upgraded to Windows 7 long ago, but for all I know this problem coincides with the upgrade as these aren't pictures I look at all that frequently.

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