T.J. Posted March 31, 2019 Share #1 Posted March 31, 2019 Advertisement (gone after registration) I want to compress my files after import to Lightroom and I want to make sure I'm doing this right: Select the original DNG file(s) then select Convert Photo to DNG Check: Only convert Raw Riles Delete originals after successful conversion. File Extension DNG Camera Raw 11.2 or Later (which mine are) Medium Size Embed Fast Load Data Seems to immediately take files from mid-80's MB to mid-50's MB. Am I messing anything? Thanks! Link to post Share on other sites More sharing options...
Advertisement Posted March 31, 2019 Posted March 31, 2019 Hi T.J., Take a look here Compressing Q2 DNG Files in Lightroom. I'm sure you'll find what you were looking for!
Stephen_C Posted March 31, 2019 Share #2 Posted March 31, 2019 I don't use Lightroom but am using the Adobe DNG Converter to reduce the size of my Q2 DNG files on import. The one setting you probably need to watch is the thing you have described as "Medium Size". Personally, I'd want to ensure I using only lossless compression and not lossy compression (to maintain all of the original information in the RAW file). I'm not sure if "Medium Size" means "lossy"—so just check that if you're concerned. Stephen Link to post Share on other sites More sharing options...
jaapv Posted March 31, 2019 Share #3 Posted March 31, 2019 Why compress? Get a 4 TB drive. 1 Link to post Share on other sites More sharing options...
SrMi Posted March 31, 2019 Share #4 Posted March 31, 2019 42 minutes ago, T.J. said: I want to compress my files after import to Lightroom and I want to make sure I'm doing this right: Select the original DNG file(s) then select Convert Photo to DNG Check: Only convert Raw Riles Delete originals after successful conversion. File Extension DNG Camera Raw 11.2 or Later (which mine are) Medium Size Embed Fast Load Data Seems to immediately take files from mid-80's MB to mid-50's MB. Am I messing anything? Thanks! There is a simpler way. a) Import DNGs from the SD card into LR b) after import select imported images and do "Metadata -> Update DNG Preview & Metadata". Wait until all DNG files are compressed. 3 1 Link to post Share on other sites More sharing options...
M11 for me Posted March 31, 2019 Share #5 Posted March 31, 2019 Exactly. We had this recently in another thread. This seems to be completely lossless. The coleague who posted that claimed that he got a saving of 30%??? Link to post Share on other sites More sharing options...
Leica Guy Posted March 31, 2019 Share #6 Posted March 31, 2019 34 minutes ago, M10 for me said: Exactly. We had this recently in another thread. This seems to be completely lossless. The coleague who posted that claimed that he got a saving of 30%??? +1. Exactly! Link to post Share on other sites More sharing options...
Whitford Posted March 31, 2019 Share #7 Posted March 31, 2019 Advertisement (gone after registration) 3 hours ago, Stephen_C said: I don't use Lightroom but am using the Adobe DNG Converter to reduce the size of my Q2 DNG files on import. The one setting you probably need to watch is the thing you have described as "Medium Size". Personally, I'd want to ensure I using only lossless compression and not lossy compression (to maintain all of the original information in the RAW file). I'm not sure if "Medium Size" means "lossy"—so just check that if you're concerned. Stephen Thanks for this tip, I saw it in another thread and tried it. Simple, easy and the files are considerably smaller and there doesn't seem to be any change in quality. Awesome. Link to post Share on other sites More sharing options...
T.J. Posted March 31, 2019 Author Share #8 Posted March 31, 2019 4 hours ago, SrMi said: There is a simpler way. a) Import DNGs from the SD card into LR b) after import select imported images and do "Metadata -> Update DNG Preview & Metadata". Wait until all DNG files are compressed. That works - thanks! Now, can somebody explain how/why that works? I've looked around and can't find seem to find a reference as to what it actually does. Link to post Share on other sites More sharing options...
ru2far2c Posted March 31, 2019 Share #9 Posted March 31, 2019 (edited) don't own a Q or Q2, so my question is: Do you have the option to compress file in camera, if so why not do it there? I understand the files are big and all that business. Not LR user either. I compress my file in camera with my 240 without any issue. So I'm curious why all the extra work. Edited March 31, 2019 by ru2far2c typo- Link to post Share on other sites More sharing options...
Leica Guy Posted March 31, 2019 Share #10 Posted March 31, 2019 It is not possible at this time to compress DNG in camera in the Q or Q2. Link to post Share on other sites More sharing options...
Whitford Posted March 31, 2019 Share #11 Posted March 31, 2019 1 hour ago, ru2far2c said: don't own a Q or Q2, so my question is: Do you have the option to compress file in camera, if so why not do it there? I understand the files are big and all that business. Not LR user either. I compress my file in camera with my 240 without any issue. So I'm curious why all the extra work. You can change JPG size but that's it at the moment. Full sized JPG's are around 25-30 MB. Link to post Share on other sites More sharing options...
ru2far2c Posted April 1, 2019 Share #12 Posted April 1, 2019 17 minutes ago, Whitford said: You can change JPG size but that's it at the moment. Full sized JPG's are around 25-30 MB. Okay, got it. Thanks! Link to post Share on other sites More sharing options...
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