Any one know if it’s possible to print to file 16 bit tiff from QU??

QU prints 16 bit TIFFs at 8 bits/pixel, 16 bits/region.

What does this mean?  QU is optimized for Windows drivers so it prints 8 bits/pixel whether you are printing to printer or file.  BUT, you can't see individual pixels in a print anyway especially at 600 or 720 PPI, so in regions larger than one pixel, color depth beyond 8 bits/channel are reproduced in the print.  In a 2x2 region (300 or 360 PPI), you already have a 10 bits/channel bit depth (1024 shades instead of 256) and by the time you reach a 16x16 pixel region, you are at 16 bits.  So QU will actually reproduce 16 bit color in every 16x16 pixel region in the print.  For reference, a 16x16 pixel region in a 600 PPI print output is a square region of about two thirds of a millimenter (less than three hundredths of an inch).

Bottom line: when you start with a 16 bit TIFF, PSD, or raw photo, you'll get output indistinguishable from 16 bits/pixel from QU even when printing to standard 8 bit drivers and you won't see any posterization or color banding.  It's basically a way to get 16 bit output while still using standard (8 bit) Windows drivers.

Mike

The above applies to both print to file and print to printer.

Mike