Posted by Carl Donohue on April 30, 2006 at 8:35 PM
Hey folks,
I scanned some slides a few months back (December) and I just now tried to open the files. Some of them opened OK, but others gave me this little popup:
Could not complete your request because the TIFF file uses an unspported depth.
These are just files I scanned on my Nikon V, which I believe
is 14 bith depth. I made some layers, did a little photoshopping,
and saved them. Now, it seems, Photoshop won't open them. Might anyone know what's going, and what I might do to correct this?
I don't think it's corrupt files, because I tried to open the back up files on a separate HD, and they had the same message for me.
Edit: I just looked at the File Properties and it says;
Bit Depth - 32, 16, 16
I, of course, have no idea what this means, except that all the slides that open correctly, don't have this information.
I have the slides, of coure, but would really rather not have to rescan and process them.
It sounds like the file has encoded the three color channel bit depths as 32, 16, 16. That would not make sense. I would expect 16, 16, 16 (16 bits per channel). It sounds like a corrupt or improperly coded TIFF file. You will probaby have to scan them again. Can you view the files with any program at all? I bet not.
Thank you for your reply. I tried opening the files in Nikon Capture, but couldn't do that, no. I'm guessing I'll have to rescan them too. &$*%#^&^$*(@@!!!!!
Carl,
I can't help, so skip this if you're in a foul mood. I've tried looking at file properties from within Photoshop (CS not CS2) and at the XP level --- I don't get the bit-depth information. I wonder if this is unique to the scanner file. I just wanted to see what my files reported for this because they are "16" bit TIFFs created from RAW files. I also have several files scanned from slides (also at "16" bits)..I still don't see the b-d info. Scanning slides is a drag. Don't you have a digital SLR yet?
Pete D.
Carl, the TIFF files are corruptted. The byte with the 32 bit depth is the culprit. That is a decimal value but is stored as 20 in hexadecimal, which is a blank space in ASCII. Also, your backup was apparantly a copy of the corrupted data.
This sounds like a bug in the software which put a blank space character into one of the bit depth channels. Normally, TIFF can be saved as 8 or 16 bit depth. It appears that the bit depth bytes may have been initialized with blank spaces, though the preferable way would have been to initialize them with a null (00) value. It could be in either Photoshop or the scanner program. It is unlikely that it is with the operating system though I have seen similar corruptions of other types of data files caused by network card drivers when writing to a file server.
If the problem happens again with other scans, then you might wish to check to see if there are any software updates which would fix the problem. Good luck.
Thank you for that detailed information. I have no idea what caused this. I've scanned hundreds of slides in the last few months, and this if the first I've seen f this problem. I'm kinda apprehensive about going in and looking at all of them, but sooner better than later I suppose. I do know that I've checked at least some slides scanned after these ones are OK, and some before are OK. Hopefully it was some temporary glitch.
I've gone back and rescanned the ones I found that were corrput.
Thanks again.
Cheers
Carl
Posted by Carl Donohue on November 13, 2006 at 10:28 AM
Hey Folks
This little nasty has raised its ugly head again, and this time I've identified the culprit. I'm using a program called Image Info Toolkit - a keywording program. I've mainly been using it for jpegs, and it works fine. But I did a bunch of TIFF files over the weekend to send to an agency, and they were al corrupted - this time 8 bit files were changed to:
8192, 8, 8 bit,
which is not readable. So it's not the scanner or anything, but this little keyword program. I've written their support, but haven't heard anything back yet.
Discussion
7 repliesI scanned some slides a few months back (December) and I just now tried to open the files. Some of them opened OK, but others gave me this little popup:
Could not complete your request because the TIFF file uses an unspported depth.
These are just files I scanned on my Nikon V, which I believe
is 14 bith depth. I made some layers, did a little photoshopping,
and saved them. Now, it seems, Photoshop won't open them. Might anyone know what's going, and what I might do to correct this?
I don't think it's corrupt files, because I tried to open the back up files on a separate HD, and they had the same message for me.
Edit: I just looked at the File Properties and it says;
Bit Depth - 32, 16, 16
I, of course, have no idea what this means, except that all the slides that open correctly, don't have this information.
I have the slides, of coure, but would really rather not have to rescan and process them.
Thanks
Cheers
Carl
Thank you for your reply. I tried opening the files in Nikon Capture, but couldn't do that, no. I'm guessing I'll have to rescan them too. &$*%#^&^$*(@@!!!!!
Thanks, I appreciate the help.
Cheers
Carl
I can't help, so skip this if you're in a foul mood. I've tried looking at file properties from within Photoshop (CS not CS2) and at the XP level --- I don't get the bit-depth information. I wonder if this is unique to the scanner file. I just wanted to see what my files reported for this because they are "16" bit TIFFs created from RAW files. I also have several files scanned from slides (also at "16" bits)..I still don't see the b-d info. Scanning slides is a drag. Don't you have a digital SLR yet?
Pete D.
No, I'm not in a foul mood. I'm just busy re-scanning. :)
yeah, I have a digital camera. But I still have a LOT of unscanend slides I'm trying to wade through.
I don't know why you don't see File Properties. I'm using CS2, that could be it, perhaps. It could be the scanner too. I have no idea.
Where's your signature tag come from? Wonderfully insightful statement.
Cheers
Carl
This sounds like a bug in the software which put a blank space character into one of the bit depth channels. Normally, TIFF can be saved as 8 or 16 bit depth. It appears that the bit depth bytes may have been initialized with blank spaces, though the preferable way would have been to initialize them with a null (00) value. It could be in either Photoshop or the scanner program. It is unlikely that it is with the operating system though I have seen similar corruptions of other types of data files caused by network card drivers when writing to a file server.
If the problem happens again with other scans, then you might wish to check to see if there are any software updates which would fix the problem. Good luck.
Thank you for that detailed information. I have no idea what caused this. I've scanned hundreds of slides in the last few months, and this if the first I've seen f this problem. I'm kinda apprehensive about going in and looking at all of them, but sooner better than later I suppose. I do know that I've checked at least some slides scanned after these ones are OK, and some before are OK. Hopefully it was some temporary glitch.
I've gone back and rescanned the ones I found that were corrput.
Thanks again.
Cheers
Carl
This little nasty has raised its ugly head again, and this time I've identified the culprit. I'm using a program called Image Info Toolkit - a keywording program. I've mainly been using it for jpegs, and it works fine. But I did a bunch of TIFF files over the weekend to send to an agency, and they were al corrupted - this time 8 bit files were changed to:
8192, 8, 8 bit,
which is not readable. So it's not the scanner or anything, but this little keyword program. I've written their support, but haven't heard anything back yet.
Cheers
Carl