|
People can only see that photo if they have a live.com account.
Posted 14 months ago.
(permalink)
|
|
Really? Live said this link would work for people without an account. I will check it out. Thanks.
Posted 14 months ago.
(permalink)
|
|
|
Ok. I am pretty sure the link is fixed. Thanks.
Posted 14 months ago.
(permalink)
|
|
|
The link is working, now. (Unfortunately, I don't have any suggestions.)
Posted 14 months ago.
(permalink)
|
|
I can see the photo but I cannot download it to examine anything about potential metadata problems that could be causing LR a problem.
Put the photo file on a server somewhere so that people can access the file and examine it, also try loading it in their own Lightroom installation. Then perhaps a solution to the problem can be found.
Posted 14 months ago.
(permalink)
|
|
|
What server do you recommend? Try this link to the album. Click on the thumbnail and then on the word download in the upper left.
cid-f1ccded8213cefaf.photos.live.com/browse.aspx/LR3%20Pr...
Posted 14 months ago.
(permalink)
|
|
@Teksmith: You are correct in your first assumption Picasa does silently write nonstandard EXIF headers and does corrupt original file in such a way that LR will reject the file as damaged. This has been documented on the Picasa forums.
www.google.com/support/forum/p/Picasa/thread?tid=0d1f649e...
www.google.fi/support/forum/p/Picasa/thread?tid=174ef601f...
While there is nothing wrong with your data, the header is corrupt,
Are you trying to work with a JPEG or a RAW file format? It may be possible to recover your image data without further degrading quality of the JPEG if that was your original.
Posted 14 months ago.
(permalink)
|
|
|
I know I have the problem with JPEG's, but it may very well extend into RAW files as well. I used to shoot JPEG-only so I see much more of the issue with those files. It seems like if PSCS5 can deal with the issue LR should be able to. How do you think I can recover the JPEG's? Thanks for your help.
Posted 14 months ago.
(permalink)
|
|
Do the JPEGs open in Preview? If so you could open them there, save them as PNGs which will strip the metadata, then open the PNGs and save them back as JPEGs. There's probably going to be a little degradation of the image in the re-encoding to JPEGs, but if you choose best quality it probably won't be noticeable.
Posted 14 months ago.
(permalink)
|
|
|
@Moose - Thanks for your reply. I am not ready to make the "little degradation" trade. Photoshop can process them so I know they are recoverable. I think there are 2 issues at play:
1. Picasa insanely modified the exif with non-standard data.
2. While the exif data might not be standard, LR is unable to read a valid jpeg.
I think if I go in and modify the exif and strip out the stuff picasa added, I might be able to get this to work. My problem is I don't see any easy way to do this as I have thousands of photos with this problem.
Ultimately, I hope Adobe will fix LR so this kind of minor error does not cause such catastrophic results.
Posted 14 months ago.
(permalink)
|
|
|
Or use ExifTool. For example:
exiftool -exif:all= img.jpg
Note the space after the equal sign. This just removes the EXIF metadata and doesn't touch the image data at all, so no degradation. You can use wildcards for the source images to process several at once,
Do try it on a test image first!
Posted 14 months ago.
(permalink)
|
|
|
Thanks. I will give that a shot.
Posted 14 months ago.
(permalink)
|
|
|
@Moose - If you ever come to Florida, let me know and I will buy you a beer. That worked on a test image and it can be applied in bulk. Thanks.
Posted 14 months ago.
(permalink)
|
|
|
Your JPEG opened in Preview. I saved it to another JPEG from Preview and then extracted the EXIF data from each, compared them with a source code comparison tool. There are about 50 differences in the EXIF metadata between them, but the image data is the same. LR3 will open the converted file, with EXIF intact, but will not open the original you posted.
Picasa's certainly doing something non-standard with the EXIF data. I haven't analyzed it any further, but suffice to say that stopping use of Picasa is my recommendation...
Posted 14 months ago.
(permalink)
|
|
|
Thanks Godfrey. I stopped using Picasa awhile ago because of this. I am just now coming to the community for help as I have been unable to resolve on my own.
Posted 14 months ago.
(permalink)
|
|
|
If you are able to read the Picasa altered original in PS, you can convert the PS output to 16bit TIFF and save and retain the (good parts) of the EXIF.
I think the reason LR fails is because it Quits after finding what it thinks is a corrupt EXIF header while PS may not quit but continue on until it finds the Start of data tag and read the image data. .
Posted 14 months ago.
(permalink)
|
|
|
Is JPEG->TIFF->JPEG lossless?
Posted 14 months ago.
(permalink)
|
|
|
That depends on what parameters you use on the TIFF->JPEG conversion. JPEG is a 'lossy' compression algorithm, but if you set the output for minimum compression, maximum quality, the degradation is virtually invisible.
Posted 14 months ago.
(permalink)
|
|
|
JPEG is not Lossless. TIFF Is Lossless. If you start with a JPEG straight out of the camera,, decompressing it will result is some data loss. Call that 1st generation data loss. If you convert that 1st generation data loss to 16bit TIFF in Photoshop, there is no further data loss. If you then convert the TIFF to an 8bit compressed JPEG and then decompress that file in any other viewer, It will exhibit 2nd generation data loss while the TIFF will always be showing the 1st generation data loss that was caused by the original in-camera compression.
Posted 14 months ago.
(permalink)
|
|
|
@ Cletus ::
I see this confusion all the time:
- There is no loss associated with opening and displaying a JPEG file. If that is your master, what came out of the camera, what you see when you open it is 100% of the data by definition. A JPEG file is an 8-bit RGB image by definition. *
- Saving that data as a TIFF file is lossless, whether you save it in 8-bit or expand the 8-bit original data to 16-bit, so the TIFF file has 100% of your original data.
- Saving the TIFF file to JPEG will incur some loss, depending on the quality/compression setting.
* (If you originally captured a raw file and rendered that to a JPEG file, in that case the original raw master is 100% of the image data captured. At minimum compression, maximum quality, rendering that to a JPEG file incurs between a 40-60% data loss. If you have done a good rendering job, that data loss is irrelevant since it is not significant data for your viewing/printing needs.)
Posted 14 months ago.
(permalink)
|
|
|
Godfrey, The SOOC JPEG begins life in the camera as a RAW image. The camera processor converts that 12-14 bit RAW data to a compressed 8 bit JPEG. It is always at the point of compression that data loss occurs. True, there is no [u]further[/u] loss by opening a JPEG file for viewing. So decompression only shows the first generation data loss. First or even second generation data loss is probably not noticeable for most purposes but that does not mean that it is irrelevant.
Posted 14 months ago.
(permalink)
|
|
|
Let's not get into a debate on semantics.
I define the 100% point as being what you have on your computer to edit. If that is an out of camera JPEG, that's 100% ... You never had the camera's internal raw file to work with. Decompressing that for viewing has no data loss.
Posted 14 months ago.
(permalink)
|
|
I have the same problem - Lightroom would show that message for some files....i dont quite understand how do i use the Exif thing on one image...Will be grateful for your help! And im a Mac user and i shoot in Raw...
Posted 14 months ago.
(permalink)
|
|
|
@ Catta :
What kind of files? Raw files? JPEG files? from what camera? etc.
EXIFtool and its documentation are available from Phil Harvey at
www.sno.phy.queensu.ca/~phil/exiftool/
There's fairly extensive documentation on how to use it there and built into it, too.
Posted 14 months ago.
(permalink)
|
|
|
well, i mentioned that i shoot in raw) thank you for the link
Posted 14 months ago.
(permalink)
|
|
I have successfully repaired my photo using ExifTool as mentioned but using different options as can be seen below:
exiftool -all= -tagsfromfile @ -exif:all -unsafe P5052594.JPG
Posted 9 months ago.
(permalink)
|
|
just rename the extension to jpg and move on
Posted 9 months ago.
(permalink)
|
|
When I get this type of error, I click on 'optimize catalog', then restart LR, and the problem has gone away.
Posted 9 months ago.
(permalink)
|
Would you like to comment?
Sign up for a free account, or sign in (if you're already a member).
|
Adobe Lightroom /
Discuss
People can only see that photo if they have a live.com account.
Feed – Subscribe to Adobe Lightroom discussion threads
