univurshul wrote:Scan Tailor output TIFFs are always 8 bit depth.
Not entirely true. For B/W output mode it's 1 bit, for other modes it's either 8, 24 or even 32 bits if the original image had colors or maybe even transparency. It never goes beyond 8 bit per channel though.
univurshul wrote:Is there any benefit to export 16 bit images for input into Scan Tailor? Would a higher bit TIFF sent into ST render better results or is this unnecessary?
There is no benefit. As all internal processing is done in 8 bits per channel, the very first thing that's done to an input image is converting it to that format.