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Resolution of JPEG previews in DNG files

Started Sep 29, 2021 | Discussions thread
PhilM oz Senior Member • Posts: 1,350
Re: Resolution of JPEG previews in DNG files
1

How are you extracting the images?

If you set the 'Full Size Preview' option in the DNG converter then you actually end up with 2 previews, the medium sized one and another full size JPEG image.

Using the command line you need to use a different option to extract the fill size JPEG preview.

'exiftool -b -PreviewImage' - this will always extract the medium size preview

'exittool -b JpgFromRaw' - this will extract the full size preview (only if DNG saved with this option)

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