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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 27 Apr 2016 (Wednesday) 14:46
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1D X Mark II Owners Unite! Discuss & Post Photos

 
HKFEVER
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Jun 10, 2016 10:13 |  #1291

sploo wrote in post #18034997 (external link)
So... you mean you're seeing corruption of files on the CF card too?

That's really odd. If that's the case it would point to the camera doing something strange.

Yes, I saw 2 raw in CF were good, but turn bad afterward (after I plugged in the CFast that contains those 2 corrupted raw files, the same raw in CF got corrupted too).

That's why I ask Canon "will the camera sync between CF and CFast?"




  
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jwcdds
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Jun 10, 2016 10:18 |  #1292

IMAGE: https://photos.smugmug.com/Family/Misc/i-Rm7B88c/0/X2/20160607-Canon%20EOS-1D%20X%20Mark%20II-1DX21143-X2.jpg

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Erik ­ S. ­ Klein
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Jun 10, 2016 10:34 |  #1293

sploo wrote in post #18034997 (external link)
So... you mean you're seeing corruption of files on the CF card too?

That's really odd. If that's the case it would point to the camera doing something strange.

If it's not the card type (CFast versus CF) and it's only raw files then it's probably the RAW format, either as written by the camera or read by one or more of the converters.

I'd bet the latter at this point.


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HKFEVER
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Jun 10, 2016 10:50 |  #1294

Erik S. Klein wrote in post #18035081 (external link)
If it's not the card type (CFast versus CF) and it's only raw files then it's probably the RAW format, either as written by the camera or read by one or more of the converters.

I'd bet the latter at this point.

Simple English please :)




  
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Erik ­ S. ­ Klein
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Jun 10, 2016 10:53 |  #1295

HKFEVER wrote in post #18035093 (external link)
Simple English please :)

The new camera has a new raw file format. There may be a bug in the software that reads the format that messes up the images. There may also be a bug in the format itself that makes it liable to being messed up.


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HKFEVER
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Jun 10, 2016 10:54 |  #1296

IMAGE: http://www.pbase.com/hkfever/image/163405702/large.jpg

IMAGE: http://www.pbase.com/hkfever/image/163412881/large.jpg



  
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haffende
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Jun 10, 2016 11:11 |  #1297

One more sleep to go and will trade in my 1DsMkIII for a shiny new 1DX MkII....high expectations from the feedback here.


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sploo
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Jun 10, 2016 11:49 |  #1298

Erik S. Klein wrote in post #18035094 (external link)
The new camera has a new raw file format. There may be a bug in the software that reads the format that messes up the images. There may also be a bug in the format itself that makes it liable to being messed up.

Reading the file should be deterministic though (if it works once, it should work again - given the same data). It would lend credence to the theory that the camera may have a bug that's causing it to corrupt the contents of the cards.

What's odd is that the corruption hits the same files on different cards. I can think of how the file system driver (the layer that converts file accesses to the blocks on the media) could have a bug (that would cause what's being seen on a single card) but it's unlikely that two cards would have exactly the same allocation of blocks - unless they were the same size, and contained exactly the same files (i.e. behaving a bit like a RAID 1 array).


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HKFEVER
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Jun 10, 2016 12:15 |  #1299

sploo wrote in post #18035159 (external link)
Reading the file should be deterministic though (if it works once, it should work again - given the same data). It would lend credence to the theory that the camera may have a bug that's causing it to corrupt the contents of the cards.

What's odd is that the corruption hits the same files on different cards. I can think of how the file system driver (the layer that converts file accesses to the blocks on the media) could have a bug (that would cause what's being seen on a single card) but it's unlikely that two cards would have exactly the same allocation of blocks - unless they were the same size, and contained exactly the same files (i.e. behaving a bit like a RAID 1 array).

The weird thing is:
- This afternoon in office, I discovered that same files were corrupted in CF.
- Tonight I copied them into my home iMac when I arrived home.
- Later on after dinner, I checked those corrupted files in iMac, but found they are OK.
- So I checked those files in CF again, they are still corrupted.

I am scratching my whatever, try to figure out what is going on?




  
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jwcdds
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Jun 10, 2016 12:24 |  #1300

HKFEVER wrote in post #18035177 (external link)
The weird thing is:
- This afternoon in office, I discovered that same files were corrupted in CF.
- Tonight I copied them into my home iMac when I arrived home.
- Later on after dinner, I checked those corrupted files in iMac, but found they are OK.
- So I checked those files in CF again, they are still corrupted.

I am scratching my whatever, try to figure out what is going on?

Now THIS is strange. I think your computer(s)/cards are possessed. Makes no sense to me that you copied the corrupted files onto the computer and have them be fine again.


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haffende
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Jun 10, 2016 12:25 |  #1301

This problem is not unique to 1DX MkII files....I have seen this using my 1Ds MK3. Same corruption seen in Capture One....my cause was copying large numbers of files from the CF card to the PC using explorer. Re-copying the corrupted file from the CF Card would clear the problem.


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Jun 10, 2016 12:45 as a reply to  @ post 18033819 |  #1302

Thank you


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Jun 10, 2016 13:40 |  #1303

Gadget-Guy wrote in post #18034937 (external link)
Something different from while on holiday with the 1DX MKII,blend of three images using luminosity masks.
thumbnail
Hosted photo: posted by Gadget-Guy in
./showthread.php?p=180​34937&i=i9240334
forum: Canon EOS Digital Cameras

Beautiful work. The sand looks like gold.




  
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sploo
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Jun 10, 2016 16:51 as a reply to  @ haffende's post |  #1304

HKFEVER wrote in post #18035177 (external link)
The weird thing is:
- This afternoon in office, I discovered that same files were corrupted in CF.
- Tonight I copied them into my home iMac when I arrived home.
- Later on after dinner, I checked those corrupted files in iMac, but found they are OK.
- So I checked those files in CF again, they are still corrupted.

I am scratching my whatever, try to figure out what is going on?

That's.... strange. It makes no sense that opening a file direct from the card and finding it's corrupted (which is I assume what you meant by "I discovered that same files were corrupted in CF") would then see the file being OK once copied onto a computer.

Does the iMac have an md5 utility (or one you could download)? Run it against a file (the "good" file on the computer and the same "bad" file on the CF card). You'll get a hash code for the each file - they should be the same. If they're not then something very strange is going on.


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HKFEVER
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Jun 10, 2016 20:47 |  #1305

sploo wrote in post #18035457 (external link)
That's.... strange. It makes no sense that opening a file direct from the card and finding it's corrupted (which is I assume what you meant by "I discovered that same files were corrupted in CF") would then see the file being OK once copied onto a computer.

Does the iMac have an md5 utility (or one you could download)? Run it against a file (the "good" file on the computer and the same "bad" file on the CF card). You'll get a hash code for the each file - they should be the same. If they're not then something very strange is going on.

What is md5 utility? Any link for download?




  
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