![]() ![]() I did read that article but I must say I see it as a sails talk. PhotoLab/PureRAW have no facility to do this ‘same data’ conversion.Īs already stated, PhotoLab/PureRAW demosaic the data, creating entirely new image data which is (approximately) three times the size (not counting bit depth differences, which may account for more). If the DNGs are significantly smaller, it suggests the camera is not doing very good compression or including massive preview images. I’m sure if you do all that, the PhotoLab/PureRAW files will look very trim! But… download DNG Converter, drop some files on it and click go with out fiddling first, and you’ll likely get very similar file sizes. Leave a copy of the original RAW in the file, and. ![]() It seems, if you want, you can tell it to Differences in compression efficiency - potentially significant.Preview thumbnail (JPEG data) being a different size to the original - potentially significant.It is logical the file sizes should be very similar, excepting the following potential differences: Adobe DNG Converter, by default, creates a DNG format file with exactly the same image data as the input RAW file.
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