MirekE Posted November 25, 2013 Share #1 Posted November 25, 2013 Advertisement (gone after registration) Lightroom allows raw files to be converted to DNG. Leica raw files already are DNGs, but the Adobe ones can have quick load data and perhaps some other goodies. On the other hand, some manipulation is done and the file is no longer original. Do you use the Copy as DNG option? Are there any known issues with both methods? Link to post Share on other sites More sharing options...
Advertisement Posted November 25, 2013 Posted November 25, 2013 Hi MirekE, Take a look here LR DNG Import. I'm sure you'll find what you were looking for!
MirekE Posted November 25, 2013 Author Share #2 Posted November 25, 2013 Even though this topic was moved for me to this forum, I am interested about DNGs specifically for M240. Link to post Share on other sites More sharing options...
hoppyman Posted November 25, 2013 Share #3 Posted November 25, 2013 The camera firmware is always going to do some processing for itself, including discarding the useless (noise contaminated) lowest 2 bits of 16 and vignette/edge corrections (actually quite a bit is required to produce a homogeneous image at all) as well as generating a preview viewable on the LCD. For the M you then have the option of lossless compression in camera (made possible by more processing power). There is no reason not to do this unless you just like to fill cards faster. You still get all of the image data in your DNG whether you import with the copy or copy as DNG options. Using the latter means that LR will apply further lossless compression and again you still retain all of the image data. Processing instructions (WB value etc) from camera are also embedded in the actual DNG, as is a low quality preview. So in those senses the file is "changed" but the image information is not degraded in any way. Processing instructions generated by develop settings in LR will also be written into the file itself (with DNG format), not in a separate sidecar file. They won't be visible in another raw converter and vice versa.Again there is no loss or change to the actual image data. I have left out the new additional Adobe option of lossy DNGs. Those are not a standard process. If I have made any mistakes in that description you can be sure that they will be carefully scrutinised and reported in more posts now ;-) Link to post Share on other sites More sharing options...
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