ApoVision Posted May 3 Share #1 Posted May 3 (edited) Advertisement (gone after registration) I am trying to find out more about what happens in my M11 if lens detection is on (other than where EXIF data are concerned). Are any lens corrections written into the DNG? Only into "metadata"? Is Adobe PS lens correction just activating what is on the DNG that comes straight out of the camera - or is it "in addition"? In (Adobe PS) post-processing, could I get rid of the in-camera lens corrections (e.g., by not activating the correction in Adobe PS)? Curious to learn from anyone who can shed a light on this, also whether you are using lens detection or if you have deactivated. Apologies if this topic has been covered elsewhere. Thanks Edited May 3 by ApoVision typo Link to post Share on other sites More sharing options...
Advertisement Posted May 3 Posted May 3 Hi ApoVision, Take a look here How RAW is DNG? M11 - lens detection - DNG - in-camera adjustments. I'm sure you'll find what you were looking for!
jaapv Posted May 3 Share #2 Posted May 3 A DNG is a container file that consists of out of camera data, data pertaining to the settings of the firmware, EXIF data,, a small jpg thumbnail, etc, all under the DNG format. There may be an XMP sidecar file ( Extensible Metadata Platform ). Your postprocessing process will convert those data into usable files. However, raw data are not a sensor dump. The sensor output will be digitalized, demosaiced , interpolated and processed by the camera firmware before being incorporated in the DNG format output. https://www.theschoolofphotography.com/tutorials/dng-vs-raw https://www.adobe.com/creativecloud/file-types/image/raw/dng-file.html Link to post Share on other sites More sharing options...
jaapv Posted May 3 Share #3 Posted May 3 So yes, you can switch off lens corrections in PS, LR etc. There are even a few postprocessing programs that don’t recognize them. Link to post Share on other sites More sharing options...
marchyman Posted May 3 Share #4 Posted May 3 9 hours ago, jaapv said: The sensor output will be digitalized, demosaiced , interpolated and processed by the camera firmware before being incorporated in the DNG format output. Not true... or not always true for DNG files out of the camera. It is true that Adobe's DNG converter will demosaic proprietary raw formats when converting to DNG format. That will also be true of DNGs created by Lr, etc, when doing denoise, panorama, hdrs, etc. That later kind of file is what the DNG spec refers to as Enhanced Image Data. It came with version 1.5.00 of the DNG spec. Adobe says: DNG 1.5.0.0 adds the concept of enhanced image data, which is a more processed (and always at least demosaiced) version of the raw image data. Link to post Share on other sites More sharing options...
pedaes Posted May 3 Share #5 Posted May 3 (edited) 5 minutes ago, marchyman said: or not always true for DNG files out of the camera But the OP is asking about Leica's DNG files specifically. Edited May 3 by pedaes 1 Link to post Share on other sites More sharing options...
jaapv Posted May 3 Share #6 Posted May 3 We are talking about Leica with native out of camera DNG You are talking about other, proprietary raw formats converted to DNG in Adobe’s DNG converter. Link to post Share on other sites More sharing options...
marchyman Posted May 3 Share #7 Posted May 3 Advertisement (gone after registration) Lightroom says this about the DNG files created by my M11: 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! I believe the line "Mosaic Data Yes" indicates the file had not been demosaiced. 1 Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! I believe the line "Mosaic Data Yes" indicates the file had not been demosaiced. ' data-webShareUrl='https://www.l-camera-forum.com/topic/420962-how-raw-is-dng-m11-lens-detection-dng-in-camera-adjustments/?do=findComment&comment=5796151'>More sharing options...
SrMi Posted May 3 Share #8 Posted May 3 11 hours ago, jaapv said: A DNG is a container file that consists of out of camera data, data pertaining to the settings of the firmware, EXIF data,, a small jpg thumbnail, etc, all under the DNG format. There may be an XMP sidecar file ( Extensible Metadata Platform ). Your postprocessing process will convert those data into usable files. However, raw data are not a sensor dump. The sensor output will be digitalized, demosaiced , interpolated and processed by the camera firmware before being incorporated in the DNG format output. https://www.theschoolofphotography.com/tutorials/dng-vs-raw https://www.adobe.com/creativecloud/file-types/image/raw/dng-file.html DNG output from Leica cameras is not demosaiced. Demosaiced data is not really raw data. Also, DNG converters do not demosaic raw data, except when converting to linear-DNGs. 1 Link to post Share on other sites More sharing options...
Ray Harrison Posted May 3 Share #9 Posted May 3 (edited) DNG is just an "open container" specification from Adobe. It can contain everything from raw luminance data from the sensor (in the case of Leica and a few other cameras) to linear (slightly demosaiced data) to fully cooked (JPEGs/TIFs). Leica's DNG files are raw luminance data fully available for you to manipulate in your raw converter of choice. Edited May 3 by Ray Harrison 2 Link to post Share on other sites More sharing options...
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