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38

Send it to a data-recovery company. If you're lucky, the only damage is to the internal wiring of the card. A data-recovery company will be able to open up the card, pull out the memory chips, and read them directly using special equipment. If you're not lucky, the bend cracked one or more chips. In that case, you probably won't be able to recover ...


18

Since this is a full sized SD card, it is possible there is a MicroSD card inside the bigger package. If the inner card is not damaged, it may be extracted and read with suitable adapter. Like on this photo: Image source: https://www.reddit.com/r/pics/comments/1hr36f/sd_card_i_bought_whilst_in_vietnam_decides_to/


12

What you have there is the thumbnail stored inside a normal EXIF JPEG file. The size 160×120 is a significant clue that this is where these thumbnails come in, because although I don't think the standard mandates a particular size, 160×120 is incredibly common. (My DSLR saves thumbnails that size, and in fact "letterboxes" the 3:2 images with black bars to ...


12

I think scottbb's answer is probably correct - but there's one other possibility that's worth checking, which might give similar symptoms. I have an SD card that wasn't being recognised by some devices. Eventually, I tracked the problem down to the plastic dividers between the contacts. They're pretty thin bits of plastic, and on my card, one of them had ...


6

Photorec is a similar sort of program which can handle the recovery of PEF files according to their list of supported file formats


6

If you want to get an idea of the probability and cost to recover your data, open up the card enclosure to see what's inside. It should look similar to this: Typically, you have a flash controller chip on top (near the contacts), and memory chips below. The controller doesn't store anything and is typically discarded during recovery even if it still works. ...


5

How to recover Testdisk and Photorec are usually good options for recovering files after deleting or formatting. Testdisk is good for accidental deletion. Use the undelete functionality in it to see if the file is still there and can be undeleted. It reads the file tables to see recently deleted files but does not attempt to search for them brute-force. ...


4

What you're seeing is consistent with data corruption in that the preview lo-res jpeg is fine, and that the compressed raw has a number of incorrect or missing bytes causing corruption. The question Why do images get "corrupted"? describes the effect at the file level. Use of a different file format (raw rather than jpeg) will give you different output but ...


4

This is a long shot, but if your JPEGs happen to be encoded in progressive mode, then you may be able to salvage a lower resolution version of your corrupted picture(s). Progressive JPEGs are encoded as several incremental "scans". The file begins with a scan that represents the whole image at a very low resolution, each successive scan builds on top of the ...


4

The D3100 has a "demo mode" which is mainly there so prospective buyers in shops can snap pictures and review them without having to insert cards. Page 147 of the manual says: Selecting "Enable release" allows the shutter to be released when no memory card is inserted, although no pictures will be recorded (they will however be displayed in the ...


4

Free, open source, cross-platform software PhotoRec can specifically recover many RAW formats, including Sony ARW (as well as Canon CR2, Nikon NEF, Pentax PEF, and others). Although the interface isn't particularly slick, the underlying functionality is the same as any proprietary program, and I'd be surprised if any of the more expensive options can ...


4

PhotoRec always did a good job when I needed it. JPEG and RAW . https://www.cgsecurity.org/wiki/PhotoRec https://www.cgsecurity.org/wiki/PhotoRec_Step_By_Step


3

Any general file recovery tool will do. For image-centric ones, there are also plenty available. The most popular ones are Image Rescue and Photo Rescue. They each offer a free-trial which shows you thumbnails and guarantee that anything that shows a thumbnail will be recovered once you pay. I can vouch that both of these work and I have seen them recover ...


3

If the problem is with the huffman (this is the lossless part of the JPEG compression), then your chances of recovering the image information are really minimal. Huffman, like other forms of entropy coding, minimizes information redundancy in the data stream, ideally to the absolute minimum. This means that there are most likely no "other pieces" of the ...


3

For the general question of recovering photos from a formatted card, see this question. Personally I have the best results with Photo Rescue. I am not affiliated with that program but when I lost some important photos (more than once sadly), that is the software which gave best results. Some photos will never be recoverable since the data has been ...


3

I checked with PEF files from my K20D, K-5 and K-3. The former two's files begin with 4D 4D 00 2A ("MM.*"), but the K-3's begin with 49 49 2A 00 ("II*."). Maybe older or newer models use even different codes. I suggest you look or ask for specific PEF files matching your own models first, then use those 4 bytes for header detection. Since they're all using ...


3

That depends on how the used recovery program worked: instead of relying on the file system entries, it could have searched the entire memory card for image data and converted that to files. In that case, it's entirely possible that it "recovered" the thumbnails embedded in your real image files only. If you haven't changed the actual content of your card ...


2

You can try using chkdsk first to recover partition. I am assuming your card is FAT32 formatted. You can use following command on Windows Command Prompt (cmd): chkdsk g: /f /r /x Please note that you should write your memory card drive name instead of g: After chkdsk is completed and your drive is visible again, you should be able to recover your ...


2

The recovered images might be the thumbnails and not the actual images. Some of the image programs or browsers create the thumbnails from the actual images for displaying in the GUI. If you know any other attributes that might ascertain that the recovered image were, indeed, the actual images (location etc) then you may wish to investigate further.


2

The following is based on a large amount of personal experience. With memory cards almost anything conceivable can happen, and sometimes does. If there is an approved means of shutting down a memory card before removing it from the camera or computer AND you care enough, then you should use it. I almost invariably swap cards in both computer readers and in ...


2

Moving the card between cameras is not likely to cause a problem. I think that's just a red herring. You might try some different recovery tool, but it seems likely that what you've gotten is as good as it's going to get. Time to get another card, and in the future remember to upload to a computer frequently and keep backups.


2

Not necessarily. If the format you are using makes use of compression, then different images of the same resolution can lead to different file sizes depending on how much variation it contains. For example, I've attached is a beautiful 500x500px image I knocked up in MS Paint which I saved in full resolution in both jpeg and bitmap formats. For comparison I ...


2

Unfortunately for you, cameras these days don't come with any form of "internal" memory1 so if you didn't have a memory card in your camera, your photos are lost forever. Sorry about that. Or if they do, it's so limited that it may as well be none.


2

As others have noted, you are seeing "thumbnails". The originals are very likely to be there and depending on what was done to the storage medium after the photos were written, some or all may be still recoverable. File recovery programs vary widely in capability. Some are fully free, some cost substantial money. I have found that the best free ones are ...


2

There are two ways a card (or drive) may be re-formatted "quick" (which simply reallocates the space taken by old files), and complete, in which zeroes are written over all files. If your camera (or PC) did a quick format, it's possible file data may still be on the card, but if a complete erasure and format was performed, it's doubtful anything could be ...


2

Data recovery programs have most success with data that has not been overwritten. The areas where the data is stored gets marked as free space, but in reality the data is still there until it is overwritten. Since none of the three data recovery programs have managed to restore the data you are hoping to find, this indicates that the data has been ...


2

Since you've tried multiple readers and computers, and since you've tried card recovery software, I'm afraid the most likely thing is that the card went bad and you've lost the photos. If the photos are absolutely precious, you may want to send it in to a data recovery company. These companies can open up the card and read from the flash chips directly. ...


1

The first thing to do is create a 1:1, block by block binary image of the medium. Preferrably, use the hardware lock feature on the card to ensure the OS doesn't attempt to even write filesystem housekeeping stuff, metadata, etc to it. Store that binary image away safely, before attempting the use of any recovery tools.


1

I'm sure you've recovered your data by now, but just in case others do not know about data recovery companies, I thought I would throw in my two cents. I had a disk that would not read in any type of device. I tried two different drives, two different card readers, and two identical cameras. Nothing would read the disk. I searched the internet for ...


1

If the recovery softwares are not finding any data on the cards, it sounnds like yo may be in need of a physical recovery....that is, a data recovery lab may need to take over now. Have you tried RescuePRO or PHOTORECOVERY recovery software?


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