I have not been able to find any documentation explaining exactly what the "Embed Fast Load Data" option does when converting to DNG. Can anyone enlighten me on the specifics of this feature? The standalone DNG converter and the tool tip displayed when hovering over the option in Lightroom note that file size will be increased. So what is the cost/benefit of this option?
DNGs with Adobe software will load faster when there is an embedded preview image called Fast Load Data (FLD). In other words, the benefit is improved performance. Since the data is embedded in DNG, that means it travels with that DNG file. Wherever you send the DNG, the embedded FLD is always available for helping performance.
Author “Color Management for Photographers" & "Photoshop CC Color Management/pluralsight"