Wolfgang Esslinger Posted July 16, 2012 Share #1 Posted July 16, 2012 Advertisement (gone after registration) This was the 10th photo I took in a panorama series. No. 11 + 12 were not saved by the camera, but when I took the missing shots a minute later they were ok. M8 set to dng+jpg. How can this be avoided? Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/183770-any-idea-what-this-is/?do=findComment&comment=2063825'>More sharing options...
Advertisement Posted July 16, 2012 Posted July 16, 2012 Hi Wolfgang Esslinger, Take a look here Any idea what this is?. I'm sure you'll find what you were looking for!
andybarton Posted July 16, 2012 Share #2 Posted July 16, 2012 Dodgy SD card? Link to post Share on other sites More sharing options...
brianv Posted July 16, 2012 Share #3 Posted July 16, 2012 Does the same error show up in both the JPEG and the DNG, in the same places? If it was the SD card, I would expect the errors to not be in the same place of the frame. If they are in the same place in the frame on both JPEG and DNG, I would suspect the electronics board of the camera that read the image off of the CCD and processes it before formatting for writing to the card.. Link to post Share on other sites More sharing options...
Wolfgang Esslinger Posted July 17, 2012 Author Share #4 Posted July 17, 2012 Does the same error show up in both the JPEG and the DNG, in the same places? If it was the SD card, I would expect the errors to not be in the same place of the frame. If they are in the same place in the frame on both JPEG and DNG, I would suspect the electronics board of the camera that read the image off of the CCD and processes it before formatting for writing to the card.. The jpg is ok. The card is an 8GB SDHC Transcend which I used before in a rented M9 but formatted it in the M8. Link to post Share on other sites More sharing options...
brianv Posted July 17, 2012 Share #5 Posted July 17, 2012 That's a relief- and makes this look like an SD card issue. This is the type of error that occurs when the sectors are bad or file structure is corrupt. I would try with another card. Link to post Share on other sites More sharing options...
WestMichigan Posted July 17, 2012 Share #6 Posted July 17, 2012 That's a relief- and makes this look like an SD card issue. This is the type of error that occurs when the sectors are bad or file structure is corrupt. I would try with another card. Do you have a memory card utility application? DataRescue is one, but there are others iirc. Your card maybe needs a good low level format or similar to map out a bum spot. RW Link to post Share on other sites More sharing options...
pico Posted July 17, 2012 Share #7 Posted July 17, 2012 Advertisement (gone after registration) That's a relief- and makes this look like an SD card issue. This is the type of error that occurs when the sectors are bad or file structure is corrupt. I would try with another card. In another thread someone suggested that the reason the M9 is so slow to write to the SD card was due to it verifying writes. Apparently the M8 does not verify. True? Does this kind of error occur with the M9? Link to post Share on other sites More sharing options...
tobey bilek Posted July 17, 2012 Share #8 Posted July 17, 2012 over did the buffer. Slow down. card filled and no more space The card directory or table of contents was filled but data storage locations were available. The card just did not know where to put it. The cure is not to erase images this does not clear the directory, only makes the storage location available for overwrite of new data. The cure is to reformat the card, never erase as it leads to fragmented files at best. Do not move card from camera to camera without reformatting in computer and then a second time in new camera. Personally I never move cards. Buy a new camera, buy dedicated cards. Link to post Share on other sites More sharing options...
brianv Posted July 17, 2012 Share #9 Posted July 17, 2012 In another thread someone suggested that the reason the M9 is so slow to write to the SD card was due to it verifying writes. Apparently the M8 does not verify. True? Does this kind of error occur with the M9? I do not believe the M8 does a verify after write- I am running 2.014 on my M8. I did some tests with a Sandisk UHS-1 card on the M8, filling the buffer, reviewing during write, deleting images, etc- file integrity was good on all when read out on the computer. The problems began when I formatted it with the computer. This is a card that is best avoided. On formatting cards with the computer: I had great difficulty with multiple Sandisk UHS-1 cards failing to format with the utility from SDCARD.ORG. The second failed card, the only operation performed was the in-computer low-level format. Sandisk replaced both, I am on the third and only use it in one camera and only format it using that camera's utility. I would try formatting the card in the M8, compare integrity shooting some test bursts with those shot slowly. Link to post Share on other sites More sharing options...
Wolfgang Esslinger Posted July 17, 2012 Author Share #10 Posted July 17, 2012 Is it normal that the combination camera/card leads to problems? I mean with cameras other than Leica. This SD card was used for some months without problems in a Nex-3, then - as mentioned - in an M9 and finally in an M8. Always formatted in camera before use. Link to post Share on other sites More sharing options...
pico Posted July 17, 2012 Share #11 Posted July 17, 2012 Tobey is right, of course, but there might be a language issue. By convention, in English the terms regarding digital storage are 'delete' and 'erase' which usually mean, 'remove directory entries' and 'erase' means 'obliterate data', respectively. Pedantic enough. There is one perfectly standard formatting program for SD cards, right from the authoritative source here: https://www.sdcard.org/downloads/formatter_3 Link to post Share on other sites More sharing options...
brianv Posted July 17, 2012 Share #12 Posted July 17, 2012 I have seen cards work with some cameras, and not with others. I have not used a Transcend card- my only experience with card/camera combinations being an issue is with the Sandisk UHS-1 cards. I have had "Sectors" go bad on memory cards. I tend not to use them after getting bad sectors- the notion being that more will go bad and cards are cheap. I tend to use 8GByte and 4GByte cards, keep several in rotation. Swap them between the M9 and M8, format in the camera when loaded. 4x and 6x cards seem well matched for the camera's write speed, but i do use 10x PNY 8GByte cards that were ~$10 each. Too inexpensive to worry about replacing a card that has given problems. Link to post Share on other sites More sharing options...
brianv Posted July 17, 2012 Share #13 Posted July 17, 2012 Tobey is right, of course, but there might be a language issue. By convention, in English the terms regarding digital storage are 'delete' and 'erase' which usually mean, 'remove directory entries' and 'erase' means 'obliterate data', respectively. Pedantic enough. There is one perfectly standard formatting program for SD cards, right from the authoritative source here: https://www.sdcard.org/downloads/formatter_3 Erase and Delete are basically the same function on many operating systems. ERA is the erase command for CP/M- and performs the DOS equivalent "delete" file function by erasing the directory entry. ERASE was carried over to DOS, I suspect to make CP/M users happy. DEL was added for DOS, and performs the same function as ERA. All of these operate by deleting the file entry, not overwriting the file. "Wiping" a file, ie wiping it clean, is a term that has been used to overwrite contents before deleting the entry. I think Norton utilities uses the term "Shredder" for the same thing. They all over-write the data in the file before deleting the directory entry, otherwise you can go collecting data in the unallocated space of the storage media. Like opening a FORTRAN unformatted direct access file and writing only the last record on how much data that you want to collect. Not that I've ever done that in the last 30 years. I had two Sandisk UHS-1 cards fail completely after using the SDCARD.ORG V3.0.0 utility. After formatting, the SDCARD utility reported that the cards were write-protected. They were not. Sandisk replaced both. This makes me believe that Sandisk did not follow the SDCARD standards for this card, and must have taken some shortcuts. Link to post Share on other sites More sharing options...
WestMichigan Posted July 17, 2012 Share #14 Posted July 17, 2012 Sorry Folks, hope people didn't think I meant to start using a Computer Application for Memory Card formating, deleteing, or similar. My thinking is that maybe he could test his card with an application designed for the task of seeing whether an memory card is misbehaving in some manner. I have one that came with my Sandisk Card when I bought it which I've had the pleasure of exclusively using to rescue images from friends and relatives with bad SD Cards! Richard Do you have a memory card utility application?DataRescue is one, but there are others iirc. Your card maybe needs a good low level format or similar to map out a bum spot. RW Link to post Share on other sites More sharing options...
pico Posted July 17, 2012 Share #15 Posted July 17, 2012 I am accustomed to $ delete/erase file.ext;* unless the volume is Set VOLUME/ERASE_ON_DELETE oh crap, I've no use for this information. I need to delete that stuff and defrag my brain. Link to post Share on other sites More sharing options...
brianv Posted July 17, 2012 Share #16 Posted July 17, 2012 Too funny. They added that command to VMS 3.something ( or 3.0? I started with VMS2.x) a long time ago because of those of us that used FORTRAN direct access files. "High Water Marking" fixed the flaw. I had a VAX 11/750 with an image processor on it as my personal computer. Back on topic: I would test the card in the camera before relying on it. The SDCARD.ORG utility doing a low-level format should identify bad sectors if they exist. The utility will "remap" them to prevent known bad sectors from being used. At that point, format with the camera and test it out. Myself- cards are inexpensive, if it has bad sectors I would stop using it. Link to post Share on other sites More sharing options...
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