When I open a Nikon RAW
.NRW file (16-bit image) with Preview, and select "File > Export...", when the Format setting is set to HEIC, the Depth option for "16 Bits/Channel" is grayed out. Why? I can export as PNG or TIFF with 16-bit depth, so why not HEIC?
And, what software can I use to convert
.NRW files into lossless 16-bit
(I am using MacOS 11.3.1)