SGreenberg Posted April 13, 2015 Share #1 Posted April 13, 2015 Advertisement (gone after registration) I'm using a 64 gb SanDisk Extreme Pro with my M and having a problem I haven't come across before. I always erase the card before going out to shoot. But when I download the files into Lightroom there are usually a few older pictures that are still there, interspersed among the new files. This was only a minor annoyance but then I realized that something was erasing new files as I downloaded. I actually watched a picture get replaced by an older file as it downloaded. Anyone else have this experience, or know anything about it? Thanks. Link to post Share on other sites More sharing options...
Advertisement Posted April 13, 2015 Posted April 13, 2015 Hi SGreenberg, Take a look here M240 or memory card overwrites when it shouldn't. I'm sure you'll find what you were looking for!
FlashGordonPhotography Posted April 13, 2015 Share #2 Posted April 13, 2015 Erase or format? You really should run an in camera format rather than erase images. And if you erase images using your computer you may not be erasing at all as most modern OS's have a trash bin that needs to be emptied. Cards don't like this and you might not be opening that space on the card up to new images. If you're having issuse formatting then running SDformat (PC only) can help. Gordon Link to post Share on other sites More sharing options...
SGreenberg Posted April 13, 2015 Author Share #3 Posted April 13, 2015 I always erase in-camera, and reformat often enough, but it still happens. Link to post Share on other sites More sharing options...
pico Posted April 13, 2015 Share #4 Posted April 13, 2015 It almost certainly a bug in Lightroom. If you're having issuse formatting then running SDformat (PC only) can help. SDformat is available for the Mac. Go here. Link to post Share on other sites More sharing options...
pico Posted April 13, 2015 Share #5 Posted April 13, 2015 OP - the problem is almost certainly due to a bug in Lightroom. What version are you using? To those who blame the SD card - not even remotely possible. Link to post Share on other sites More sharing options...
SGreenberg Posted April 13, 2015 Author Share #6 Posted April 13, 2015 Lightroom 5.7 Link to post Share on other sites More sharing options...
hoppyman Posted April 13, 2015 Share #7 Posted April 13, 2015 Advertisement (gone after registration) That is a very strange one. I don't think that it has anything to do with the card though. It doesn't quite fit with your description but I suspect that this is to do with (embedded) previews being updated in Lightroom. One thought I had is if your new file names are the same as previous ones????? I suggest that you look carefully at every setting and process starting with your camera menu settings and then your import setting in LR . I'm not aware of this being reported by anyone previously. I'm not suggesting that this problem is not happening to you of course. I think it has to be some probably obscure setting or process (combination?) that you are doing differently? setting changes can sneak in with upgrades for example. I have the same Lightroom on PC and my Macbook and I guess 50,000 original images. As a practical matter what I do is import as convert to DNG, keeping the original file names and making a second copy simultaneously. I delete the images afterwards in camera only. Very rarely do I even format the cards except on first use in a new camera. Link to post Share on other sites More sharing options...
wparsonsgisnet Posted April 13, 2015 Share #8 Posted April 13, 2015 I am using a pair of the same cards and have zero problems -- I always reformat the card in the camera, rather than erasing files. I do 'delete' pix in-camera, but don't have any problems from that process. There have been *many* posts about reformatting in the camera. It would be an understatement to say it is highly recommended. Link to post Share on other sites More sharing options...
SGreenberg Posted April 13, 2015 Author Share #9 Posted April 13, 2015 Thanks for all the suggestions. I dowloaded everything on the card to another computer (both are IMacs running Lightroom 5.7) and it worked exactly as it should, nothing overwritten or deleted. So I think that the Lightroom bug hypothesis is the best one. Link to post Share on other sites More sharing options...
Mike51 Posted April 14, 2015 Share #10 Posted April 14, 2015 What you are seeing is an 'old' JPEG thumbnail 'masking' the RAW file. Just double click onto the thumbnail in question to enlarge it. When it resolves you will see the original image you took. Mike. Link to post Share on other sites More sharing options...
Peter H Posted April 14, 2015 Share #11 Posted April 14, 2015 I have this exact same thing from time to time. It is just the jpeg thumbnail masking the RAW file as Mike and others say above. The original RAW file is fully accessible and processable so no real harm is done and nothing is lost, but it is irritating though. Link to post Share on other sites More sharing options...
Guest JonathanP Posted April 14, 2015 Share #12 Posted April 14, 2015 I slightly hesitate to post this as I think I might get a reputation for just moaning about Leica software*, but here goes: this isn't a Lightroom bug, its a problem with Leica not implementing the DNG specification properly in the M240 - see http://www.l-camera-forum.com/topic/200020-leica-m-240-image-unique-id/?p=2665132 The problem is the good old ImageUniqueId and RawDataUniqueId's in the DNG exif - these are supposed to provide a unique identifier for each image which Lightroom and Bridge use to manage their preview cache (thus avoiding any problems with duplicate file names). In previous cameras, Leica used an encoding of the shutter activation count which did result in a unique enough number that you won't see this problem with the M9. For whatever reason, in the M240 the shutter count was removed from the unique image IDs and replaced with a time-based count that is reset whenever the camera is powered off. So its now possible to get 2 images with the same ID, which is what confuses the Lightroom cache and ends up displaying the wrong preview (going into develop module should show you the real preview). This is fixable via ExifTool, or you can use my 'green shadows' plugin to fix rogue images - it will replace the image IDs in the output file with proper unique image digests. My work-around to reduce this is to only switch my camera power off when putting it away in the bag, and just let it power save when carrying around - the power save doesn't reset the counter. Sometimes it feels like a bit of a stuck record, but I just wish Leica would polish off these few remaining M240 bugs If there's anyone listening, then a quick fix to the M240 s/w could be a simple as using the date hashed into the IDs? Just a thought... Jonathan *I did post a picture as well yesterday - honest Link to post Share on other sites More sharing options...
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