Just curious to know if anyone has tried using any of the EOS cinema lenses with the Mark III and if so, did you feel that the picture quality was better than that of the "L" lenses?

Hopefully someone with experience with them can chime in soon. It's my understanding that (at least with the cinema primes) they use the same glass as their L counterparts. The main image quality difference you'd see is in the bokeh due to the 11 blade aperture.