You can also post process added sharpness onto your video in some compositing app (after effects/shake/whatever). Marmoset renders looks so sharp thanks to it's sharpness post-process.
praxedes: Mess around with the antialiasing and texture filtering settings. They usually default to quite low by default - for a sharp render change Mental Ray's sampling options to a minimum of 1 and a maximum of 4 (I think default is min 1/4 max 1 which is a bit blurry). Also select all your textures File nodes that…
One thing I would love to know is, how did he get that fantastic turntable render from Mental Ray with his game model? I have Maya 2009 and would love to get something like that happening, but all of my game model renders in mental ray look weird- kind of out of focus with the detail blurred and softened like there's a…