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Old Jun 6, 2010, 6:41 PM   #1
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Default Grey Bar Covering Bottom Portion of Images

Hi All,

First post (and of course looking for help)...

I recently bought a new Sony DSC-HX5V to replace a DSC-T70. We took the memory card out of the T70 and moved it directly to the HX5V then proceeded to take pictures of our daughter's high school graduation ceremony and party.

When we connect the HX5V to view the pictures on the wife's MacBook Pro, the Mac's onboard import preview window shows the entire image thumbnail, but the imported pictures have approximately half of the image obscured by a grey field or "bar".

I tried using the camera native software to import the pics on my Windows PC, and had similar behavior (full thumbnail, partial import). When I try opening the image folder as a standard directory within a Windows folder window, it will initially generate complete thumbnails, but then adds the grey field within a few seconds of generating the thumbnails. I other words, I see the full thumbnail, then shortly after, the grey field appears. Doing a copy/paste from folder to folder results in full size images with a grey field.

We've also tried moving the memory card to the old T70 camera, but the behavior is the same.

It's frustrating because it appears that the entire image data is there, but the grey bar is being added on top.

Anyone have any helpful ideas?

Thanks,

Chris
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Old Jun 6, 2010, 7:30 PM   #2
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I just responded to someone else with a similar problem. So, I'm copying the rest from the other thread.

The thumbnails are a separate image inside of the larger image file. So, it's not uncommon to have good thumbnails and corrupted images.

I'd try seeing if you can recover your images from it using a program that ignores the File System entirely first. My suggestion would be Photorec (free).

It should be able to recover any images that haven't been overwritten yet (although some may also be bad on the card). Use a card reader versus a USB Attached Camera. See this thread for more details:

Recovering Images or Video from Memory Cards

As for why it had a problem, usually, it's just a corrupted FAT (File Allocation Table). That can happen when something causes incomplete writes to media (for example, deleting files using a PC and removing a camera or card before all writes in memory have been flushed without using Safely Remove features of your Operating system).

Some drivers may cache writes (especially if the card reader is plugged in when a system is booted, where it may not treat it as removable at the time), depending on the OS version you're using. With Windows, you can "right click" on a card under "My Computer" and use the "Eject" choice to make sure the file system is unmounted with all writes flushed to it before removing a card. With a Mac, you can click on the icon for it and use your Eject key to accomplish the same thing.

Personally, I always reformat a card prior to *every* reuse using a camera's menu choice for format (not the PC) -- no exceptions. That's just as fast as deleting files anyway (since you're only recreating the FAT, not writing over everything on the card in most cases).

Reformatting a card prior to every reuse with the camera's format choice insures insures that I always start out with a fresh FAT, without potential issues from USB errors, writes being cached in a PCs memory, etc.), formatted just the way a camera expects it, since it's performing the format.

So, after you get what you can from it, I'd make sure to format it using your camera's menu choice for that purpose before using it again. Then, see if it works (and I'd suggest reformatting it with the camera's menu choice for format prior to every reuse, especially if you're sharing the same card in more than one camera).
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Old Jun 8, 2010, 10:40 AM   #3
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Hi JimC,

Thanks for the response and info. I've tried the recovery app once and didn't get any results, but I'll try a couple more times with different options.

One interesting thing - the pictures stored to the camera's on-board memory exhibit the same grey bar artifact. Should on-board memory be formatted too, or should it already be compatible and fully functional?

Thanks,

Chris
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Old Jun 8, 2010, 10:44 AM   #4
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Try selecting "whole disk" when you get to the screen that allows you to pick a partition.

Interesting... Have you got an example of what you're referring to you could attach to a post here? Is it the same exact bar in every image? If so, you may have a camera hardware problem, as you'd have more random image corruption if it were a file system problem.
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Old Jun 8, 2010, 2:15 PM   #5
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Well, when I opened my image editing software (GIMP) to reduce the size of the image for attachment, I got a JPEG error message:

"Corrupt JPEG data: premature end of data segment"

"Unsupported marker type 0xf5"

On some images I also get a "Bad Huffman code" error.

Ideas?

Chris
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Old Jun 8, 2010, 2:29 PM   #6
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That means they're corrupted.

But, I'd find it unusual that you're seeing the same symptoms with cards and internal memory unless you've got a camera problem of some type, or something you're doing is causing the issues.

For example, removing the camera from a USB connection after deleting photos without using the operating system's "Safely Remove" features (or the "Eject choice" if you right click on the icon for a camera or reader under "My Computer"), or you have a USB issue of some type causing corruption when writing to the camera or card from a computer. It's a good idea to use the Eject feature before removing a card to make sure any writes still being cached in the Operating System's memory have been written to the card (since that will flush any pending writes and unmount the file system on it, reducing the chance of corruption problems).

Power problems can also be at fault from time to time (low battery not providing enough "juice" for writing files).

I'd format the internal memory, too.
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Old Jun 8, 2010, 4:43 PM   #7
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I think my wife may have disconnected the camera without ejecting it the first time she connected it, but if I remember correctly, she had already determined that there was a problem with the images before doing so.

I just tried PhotoRec again and it found a few images on the volume I scanned, but the .gz file it created won't open. The unarchive program says there's no such file or directory even though I'm looking right at it...

Help?

Maybe I should try all this on my PC since I'm unfamiliar with Macs. Does the PC version also run in a terminal window?

Chris
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Old Jun 8, 2010, 4:48 PM   #8
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Yes. All versions of it have text based interfaces.

By not using a GUI, that makes it easier to port to more operating systems.

As a general rule, I use Linux to recover images with it. But, the other Operating System versions should work in a similar manner.

.gz file, huh? That's odd. Anyway, by default it's only going to give you uncorrupted images. There's a check box you can change if you want corrupted images, too (and it sounds like you probably have lots of corrupted files from the way you're describing your issues).
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Old Jun 8, 2010, 7:18 PM   #9
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Thanks.

I used a different file recovery software I have that's not specific to media files and the recovered files look slightly different. I wanted to describe them to you to see what you thought:

Where the unrecovered files (copied from the memory) have the grey bars, the recovered files instead have monotone coloring and in some cases, skewed focal points. For example, the upper portion of the image has complete coloring, but the lower portion looks like we used a pink, blue, yellow, or green filter. Sometimes the upper and lower portions are in line, and sometimes they are skewed left-right to some degree.

Does this mean the CCD has been damaged?

Chris
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Old Jun 8, 2010, 7:22 PM   #10
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Well -A little more info:

The first 20 or so pics have that pink, blue, etc tint to the lower portion, but later in the session, the grey bar makes its appearance and continues to the end of the files.

Chris
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