You can now export photos from Lightroom as DNG files in three simple steps
One of the new features in Lightroom 3.2 is the ability to export photos from Lightroom in the DNG format. If you have DNG files in Lightroom that you want to export and backup elsewhere, or another file type that you want to export as a DNG to use somewhere else, simply follow these three steps to see how easy it is to export them in the DNG format.
❶ Select the photos you wish to export
Open lightroom and find the photos you want to export
Choose the square grid presentation mode icon if you want to view the file type for each photo
Square mode shows file types
Select the photos you want to export
❷ Choose the DNG file type
Select File>Export or press cmd+shift+E (macOS) or ctrl+shift+E (Windows) to access the export screen
Select DNG from the list of file types in the dropdown menu
The default settings for DNG export are:
Use Lossy Compression: Off
Preview Size: Medium (1024 px long edge)
Embed Fast Load Data: On
Embed Original Raw File: Off
These settings cannot be edited.
❸ Export to a folder
Click on Export 'x' Photos at the top right of the screen (x is the number of photos selected for export)
Select the destination folder for your photos and click Export
About DNG files:
Raw file formats offer more creative control than many other formats, but since the specifications for the different raw formats used by each camera manufacturer are not always publicly available, many software applications can’t read them. Digital Negative (DNG) is a publicly available archival format designed to provide compatibility for raw files generated by various digital cameras. The DNG specification also allows for the addition of private metadata. Adobe provides a free Adobe DNG Converter to translate raw files from many of today's popular cameras in to DNG files.