Adobe dng converter 8.36/5/2023 ACR and Lightroom have been creating Tiled DNG files for a long time, however if you have a camera that shoots DNG natively, you can update those to Tiled DNG files to take advantage of the new performance improvements. It means that different threads or processors can all be working on decompressing the file at the same time, resulting in a faster load time. A Tiled DNG is the same data, but arranged in strips instead of one long string. Although a recent addition, Fast Load data doesn’t affect backwards compatibility and only increases the file size slightly.Īlso added in Lightroom 3.6 was multi-core reading for Tiled DNG images. The difference is more noticeable on large files or those with complex initial processing, such as DNG Opcodes. It allows compatible programs, such as Lightroom 4, to show you a preview more quickly than a proprietary raw file or a DNG file without Fast Load data. It stores partially processed data, like the Camera Raw Cache data which we’ll come to in the Previews & Speed chapter. New to Lightroom 4 is a Fast Load Preview for DNG files. Pro – Speed (Fast Load Previews & Tiled DNG’s) Updating that preview doesn’t touch the original raw data, so it’s a nondestructive way of updating the photos to look their best. That means that other programs that rely on the embedded preview will be looking at your processed image preview rather than the original camera preview. You’re in control-you choose how big you want that preview to be, and you can update it to show the Develop adjustments you make in Lightroom. If you select the DNG format, along with that XMP data in the DNG wrapper, there’s an embedded preview. All of your data is stored in the catalog, so you don’t have to write to the files, but it might be a factor in your DNG decision if you do choose to use XMP. On the other hand, sidecar files can easily become separated from their raw files. The whole file may need uploading again each time you choose to update the embedded metadata, whereas tiny sidecar files would upload quickly. The question is, do you find sidecar files to be a pro or con? If you use an online backup service, embedding that metadata instead of using sidecars could be a disadvantage. DNG files can safely have that information stored within the DNG wrapper, like JPEG, TIFF and other documented file types. Because proprietary raw formats are largely undocumented, it’s not safe to write most data back to those original files, so it has to be written to a sidecar file instead. In addition to storing metadata in your Lightroom catalog, it’s also possible to write that data back to the files in a header section called XMP. It’s also been submitted to the ISO to become an ISO Standard, just like Adobe’s PDF format many years ago, so it should be here to stay. The question is, will you be able to find a raw converter in 20 years time that will convert your camera’s proprietary format when that camera model is ancient history? Some of Kodak’s early digital formats are already unsupported by Kodak themselves, so how long will it be before other formats start to go the same way? It may not be an issue at the moment, but do you want to have to keep checking your old file formats to make sure they’re still supported?Īlthough DNG is Adobe’s baby, there are a long list of other companies supporting it, including Apple, Corel, Extensis, Hasselblad, Leica, Pentax, Ricoh and Samsung, to name a few. The DNG format is openly and completely documented, which means that it should be supported indefinitely, whereas proprietary formats such as CR2, NEF, RAF, etc., aren’t. DNG is a well worn debate on many photography forums on the web, and there’s no right or wrong answer, but there are a few pros and cons to consider when weighing your personal decision.
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