Concorde-SST Posted March 13, 2008 Share #1 Posted March 13, 2008 Advertisement (gone after registration) Hello, I did set up the wrong date in my camera (Canon 1Ds II) and in the Leica too. Please don´t ask how that can happen but when you travel its really common to get out of sync... So I´m asking if its possible to change the stamped dates of the original RAW- Files (DNG and CR2 in my case)? If so, how? Is it a plain Finder thing (I use OS X on a Mac). Thanks a lot, best regards Andreas. Link to post Share on other sites More sharing options...
Advertisement Posted March 13, 2008 Posted March 13, 2008 Hi Concorde-SST, Take a look here Change Creation Dates in DNG or CR2 Raw-Files? . I'm sure you'll find what you were looking for!
Guest Essemmlee Posted March 13, 2008 Share #2 Posted March 13, 2008 The document below tells you all you need to know about RAW and DNG files, but it's not looking good for a date change until you save in another format (tif, jpg whatever). http://www.ppmag.com/reviews/200709_adobedng.pdf Link to post Share on other sites More sharing options...
pgk Posted March 13, 2008 Share #3 Posted March 13, 2008 I don't think that this is at all straightforward I'm afraid. My web designer (when creating an upload database - long story) created a custom XMP data input panel within PS to add data. Whilst looking into this he was able to examine RAW files using text editing software which reveals all the added data - and clearly this can ALL be edited - as his online software extracts data to feed the database and thus support the images online. Your problem is that the origination date is not intended to be edited and you will only be able to do so if you can find some editing software which actually gives access to editing the origination date is a straightforward way. In all honesty I'd suggest that this could be complex and long winded unless you are very fortunate and find a bit of software to allow you to batch redate/time the images. I really don't know that it's worth it. I too use OSX and I'm pretty sure that there is no work around - if someone knows different please let me know as I too have incorrectly timed files! Link to post Share on other sites More sharing options...
Concorde-SST Posted March 13, 2008 Author Share #4 Posted March 13, 2008 Grrmmbl... Thats unfortunate! Didn´t think it is that difficult...another thing is, when you send in the camera for clean up or repair work, the dates are almost always wrong. Often I forget to re-set it...(laziness, sheer oversight, age, whatever!)... I just hope there´s a solution, I´d even do it with an text editor, but have no idea how to access the data. Thanks anyway!!! Andreas. Link to post Share on other sites More sharing options...
pgk Posted March 13, 2008 Share #5 Posted March 13, 2008 My web designer used a text editing program running under windows. Text Edit from Apple won't handle the file sizes. I'd be wary as I gathered that the data is 'tagged' to delineate and identify it so making a mistake might result in a unreadable file. I've done the same thing with times on my dSLRs and M8! Probably a common problem! Link to post Share on other sites More sharing options...
Concorde-SST Posted March 13, 2008 Author Share #6 Posted March 13, 2008 Well, so far I tried several Hex editors (like HexFiend or FileCarver for Macs, can be found on versiontracker). Changing seems easy, you can save it as well. But no converter will recognize the manipulated file, not PS 2, Camera Raw, Lightroom or Capture One 4. DNG converter doesn´t helps too. Seems there is a checksum thing in between where it gets corrupted... any other ideas!? best, Andreas. Link to post Share on other sites More sharing options...
Tina Manley Posted March 13, 2008 Share #7 Posted March 13, 2008 Advertisement (gone after registration) Andreas - You can change the date and time of raw files with Breezebrowser. Tina Tina Manley- powered by SmugMug Link to post Share on other sites More sharing options...
Concorde-SST Posted March 13, 2008 Author Share #8 Posted March 13, 2008 Andreas - You can change the date and time of raw files with Breezebrowser. Tina Tina Manley- powered by SmugMug It doesn´t works with Macs. Thanks anyway. Andreas. Link to post Share on other sites More sharing options...
robsteve Posted March 13, 2008 Share #9 Posted March 13, 2008 I think PhotoMechanic can change the dates/time on the Canon files. I am not sure about the Leica files. Welcome to Camera Bits, Inc. Link to post Share on other sites More sharing options...
Tina Manley Posted March 13, 2008 Share #10 Posted March 13, 2008 But if Breezebrowser can do it, that means it can be done by other software. Surely there's something available for Macs that will do the same? Tina Leica Traveler Link to post Share on other sites More sharing options...
Concorde-SST Posted March 13, 2008 Author Share #11 Posted March 13, 2008 Wow thanks, I should have looked more closely...thought of too much low-level editing! I could do it with Photo Mechanic... Thanks a lot!! best regards, Andreas. Link to post Share on other sites More sharing options...
robsteve Posted March 13, 2008 Share #12 Posted March 13, 2008 Wow thanks, I should have looked more closely...thought of too much low-level editing! I could do it with Photo Mechanic... Thanks a lot!! best regards, Andreas. Will it change the Leica DNG files as well? Will Capture 1 open the DNG file once you update the time using PhotoMechanic? Link to post Share on other sites More sharing options...
Concorde-SST Posted March 13, 2008 Author Share #13 Posted March 13, 2008 Hm, interesting results... Yes, I can change the date+time in Photo Mechanic too for M8 DNG files. And they do open up in Capture One 4. BUT the timestamp doesn´t changes in the info section! In Lightroom the correct changed capture date/time will be shown. Strange?! Seems that it depends on the Converter used or Capture One has a deeper "penetration" of the source code of those DNG files. Even converting it again to DNG (Adobe DNG Converter) it doesn´t changes in C1 4. In Photoshop CS2 the changed capture time does show up. My conclusion so far is, if anyone does work with capture sensitive time things (e.g competitions, which only allow photos taken last year or so) with the M8 really should pay attention to setting up the right time before any shoot inside the camera. It seems that this camera format bakes the time information really tight. As for my Canon 1 Ds and 1 Ds II this restriction doesn´t applies. Mabye others can find out more!? best regards, Andreas. Link to post Share on other sites More sharing options...
sandymc Posted March 13, 2008 Share #14 Posted March 13, 2008 One of the problems you're having is that there are multiple ways to save creation dates in a DNG; it can be encoded in the various EXIF fields or in XMP data - different raw converters will give priority to different storage locations. I would try changing the data in Photo Mechanic, then running the changed file through Adobe's DNG converter; DNG converter tends to try to synchronize the various locations Sandy Link to post Share on other sites More sharing options...
Concorde-SST Posted March 13, 2008 Author Share #15 Posted March 13, 2008 One of the problems you're having is that there are multiple ways to save creation dates in a DNG; it can be encoded in the various EXIF fields or in XMP data - different raw converters will give priority to different storage locations. I would try changing the data in Photo Mechanic, then running the changed file through Adobe's DNG converter; DNG converter tends to try to synchronize the various locations Sandy Sandy, I already tried that, if you remember my previous post. I changed the date with PhotoMechanic, then tried to convert. Nothing. best, Andreas. Link to post Share on other sites More sharing options...
DavidStone Posted March 13, 2008 Share #16 Posted March 13, 2008 Sandy, I already tried that, if you remember my previous post. I changed the date withPhotoMechanic, then tried to convert. Nothing. best, Andreas. I'm using ExifTool - on a Mac - to insert lens info for non-indexed lenses (i.e.Voigtlander). I'm confident enough now, having used it quite a bit, to dive in and put this straight into the DNG file. It reads in C1 v.4, no problem. I've no idea whether it can change the date, but I see no reason why not. David Link to post Share on other sites More sharing options...
luigi bertolotti Posted March 13, 2008 Share #17 Posted March 13, 2008 With PhotoME (free - Windows - I found the link here, in another thread) it's very easy... edit the original M8 DNG, change date-time, save... in LR you process the DNG exactly as the original, and the date/time is the "new" one. Link to post Share on other sites More sharing options...
robsteve Posted March 13, 2008 Share #18 Posted March 13, 2008 Hm, interesting results... Yes, I can change the date+time in Photo Mechanic too for M8 DNG files. And they do open up in Capture One 4. BUT the timestamp doesn´t changes in the info section! Andreas. Are you sure you are not just changing the IPTC date and time, not the actual exif date and time? Robert Link to post Share on other sites More sharing options...
Concorde-SST Posted March 13, 2008 Author Share #19 Posted March 13, 2008 Are you sure you are not just changing the IPTC date and time, not the actual exif date and time? Robert Yes, I´m sure. Anyway, with C1 not that much but any other program shows the changed capture dates in the original RAW files. best, Andreas. Link to post Share on other sites More sharing options...
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