then M8 Digital Camera - White Balance: 4950/10" When I click on File > Open DNG Image.the file opens.
The program seems to start up properly when I click on it. I am using an Apple iMac running High Sierra Two files get downloaded: DNG Profile Editor.app" and also "DNG Profile ". I have downloaded and installed the Adobe DNG Profile Editor, Version 1.0.0.47 beta
ADOBE DNG CONVERTER DEUTSCH MAC
In the very worst case, I'd have to program Mac GUI with AppleScript to find only the DNGs where the preview is not full-size via my Perl magic, then somehow select them all in the Lightroom and robo-click "Update DNG Preview and Metadata" for the selection - but I'd really, really prefer to be able to do it from the command-line with the DNG converter itself. How can one do it with the Adobe DNG converter, preserving all the keywords and other metadata? Furthermore, how can it be done so the Lightroom will not notice anything?Įssentially, I'm trying to add another button to the Lightroom - not just "Update DNG Preview," but "Update DNG preview where full-size is missing." Ideally, of course, we'd have "Update DNG Preview if obsolete," including obsolete as non-conforming to a given set of the desirable preview settings, such as its size. Now the interesting question is to replace the original DNG with the same but only the full-size JPEG preview regenerated. With a metadata explorer such as Perl's exiftool, I can extract the size of the previews and see whether they're full-size or not. I'm trying to create a script to regenerate full-size JPEG previews to all DNGs where it was not done upon the initial conversion. The image won't open in photoshop or in lightroom and I can't find any indication as to what the actual problem is. So obviously SamplesPerPixel is present in SubIFD 1, and I've seen plenty of dngs that have LinearRaw with 3 channels. *** Error: Missing or invalid SamplesPerPixel (SubIFD 1) *** Orientation: 1 - 0th row is top, 0th column is left I'll start off with the verbose output of dng_validate: I'm working on a program to wrap image info into a dng format, but have run into a snag that I cannot find in the documentation. If you need the original NEF file let me know. Perhaps there is a hidden bug in the lossy DNG conversion process. I was very surprised, that JPG result is is much better than the lossy DNG for this case.
The source of both DNG files was a NEF File from a Nikon D7100.Īlso interessting is, that for this excample the file size of the lossy DNG is greater than the lossless DNG. Here is the cropped JPG from the lossless DNG (file size 10877KB):īetween this JPG and the lossless DNG file is no visible difference.Īnd here a JPG from the lossy DNG (file size 13261KB):īetween this JPG and the source lossy DNG file is no visible difference. Surprisingly with this extreme example the JPG versions looks much better as the lossy DNG version of my source lossless DNG. I have an example where you can see red security lights of a great antenna on top of a mountain. The stars in the dark sky or the red lights of an aeroplane in the dark sky. It seems that the lossy DNG format has problems with dark pictures with small light sources for example I tried out the lossy DNG format with a lot of pictures.įor most pictures I can't find any visible differences.īut I found also some pictures with very noticible visible differences between lossless and lossy DNG.
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