Faulty JPGs?

Bletch

Bletch

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James
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Hi guys.
I've just returned from my holidays and discovered a dozen or so photos that are faulty. Some won't open up.
AcdSee17 says 'The Source Data Format is not recognised', whilst Photoshop says 'Could not complete your request because a JPEG marker segment length is too short (the file may be truncated or incomplete)'.
A few other photos nearby the faulty ones do open up but they are ruined by a big thick pane of solid colour - Please take a look at the example below , The size of the solid colour differs per photo, on some it has replaced half the photo with either solid purple or green.

Anyone know what causes this, faulty SDHC card?

I'm also worried I think it might be spreading :(

Thanks for helping


http://www.flickr.com/photos/james8arthur/11285455755/
 
My guess would be a faulty or slow SD card maybe???

Les
 
Could it be that the card needs formatting?, if this isn't done on a regular basis the card can become corrupted.
 
Hi guys
I only used 2 of 4 cards whilst on Holiday both are Transcend class 10 UHS1 cards
Not sure which I would say is faulty, but both were formatted in camera before each shoot.
Maybe I shoot just ditch them both.
Thanks for helping.
 
copy the files off the card before anything else goes on a wobble.

There are some free file recovery software and Im sure there are some "jpeg fix" applications (free) that you can find, if you google.

Personally, if I get a card that starts getting corrupt, its going in the bin. Your images are too precious to be a cheap skate with so once you have your images (corrupt or not), throw the memory card.
 
Hi guys
So the card is probably to blame.
Will do as you suggest Carl and bin the suspect card. Will Google those jpg fix apps too, thank you everyone.
 
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Yeah. Maybe the netbook's built in card reader.. I'm going to have to watch that, although I'll be using the card reader in my desktop from now on.
Just checked over all the photos from that days shoot, not found any more bad ones. Thanks Neil.
 
Bletch said:
Hi guys.
I've just returned from my holidays and discovered a dozen or so photos that are faulty. Some won't open up.
AcdSee17 says 'The Source Data Format is not recognised', whilst Photoshop says 'Could not complete your request because a JPEG marker segment length is too short (the file may be truncated or incomplete)'.
A few other photos nearby the faulty ones do open up but they are ruined by a big thick pane of solid colour - Please take a look at the example below , The size of the solid colour differs per photo, on some it has replaced half the photo with either solid purple or green.

Anyone know what causes this, faulty SDHC card?

I'm also worried I think it might be spreading :(

Thanks for helping


http://www.flickr.com/photos/james8arthur/11285455755/
Click to expand...

I don't know about the cards being faulty but if I were to offer my option, I would say that the images never got a chance to complete the saving to card when something happen. Did you turn off your camera too soon while the camera was in the middle of saving to the card? Did you operate another control while the camera was still in the middle of saving the image to the card? Anything like that? Maybe possible that card could be faulty and is too slow to save image to card before another control had been used or camera turned off or such.

I've seen something similar to what you said.

I had a dial up network, so sometimes images would take a while to download and display on screen, but sometimes when i see an image that would make a good wallpaper or a royality free image I could use, I would see the image fill up, but did not see if it completes the downloading when I would right-click and save the image before it could complete the download. Later on I would open the file and see the bottom half being filled with solid colour.

Sounds similar, therefore I would image that your photos were in the middle of being saving to card when they were interrupted. Your photos could have been interrupted somehow, or card is slow so photos could not complete the save and gets interrupted.

Well, that's just my option.
 
I have had this message before, it can mean the file extension has not been written correctly or is missing.

In windows explorer try adding the extension .jpg to the end of the file name (no spaces) of one of the images and see if it becomes visible, do not forget the dot before jpg.
 
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when my card went down i used this free download google zar9 demo
 
Hi guys :)
Major Eazy - That's interesting, I too have come across the wallpaper-half-downloaded thing lots of times in the past.
I looked at the time between the first faulty photo and the last, 60 minutes, 30 photos taken, 14 corrupted. The bad ones were 'mostly' clustered together.
I used burst once or twice, but also just clicked the once for a few landscape shots. Maybe I do need to slow down a bit letting the camera do it's thing before turning it off.
Thanks for taking time to post your thoughts.

Paul - the renaming didn't work unfortunately, but thank you for taking time to help.

Rab & Coldpenguin, thanks for your suggestions, I did try the trial of Stellar Jpg Repair but It failed on all of them.

Cheers
 
On the canon, the camera buffers the shots taken (so mine has 15 shots buffered), then writes them to storage.
If this was causing the corruption, then it is the internal memory to the camera.

If it is the memory card, reformat it, then scan it with scandisk, checking for bad sectors.
 
I ditched the memory cards that I thought might be responsible, but I will do as you say - reformat & run scandisk on all my other cards.
I don't think It was caused by the cameras internal memory (hope not anyway), mainly because it happened on day 9 of a 40 day holiday, no other incidents.
 
I have used something called stelar Phoenix recovery which has worked well at recovering files from a corrupt card. I did pay something like £40 but it worked where others failed.
 
I had the same problem a few years back, thought it was the card so scrapped it. Then it happened again with a different card tried a new card reader and all was OK, I then scrapped the card reader no problems since (touch wood).

Sandisc do a recovery program forget the price, but it works a treat even after deleating the photo's of the card.

Trevor
 
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