Here's the article: http://www.cinema5d.com/news/?p=9243 (R3D file here)
But some excerpts:
Disclaimer: This is not a scientific test, merely a look at the sensors qualities under the given condition.
This is a quick test to get a feeling for the sharpness of the Scarlets Mysterium-X sensor. And to make sure sharpness is not suffering from lens type I tried some PL lenses with a Scarlet PL mount as well. More on that later.
Contax Zeiss 28mm T2.8
Recorded at 4K, ISO 800, 25fps, 1/25th shutter, Aperture 5.6 +1/2
Under the given light conditions the Contax Zeiss produced very good sharpness and could hold up with the PL lenses. The PL lenses used were pre-production models and I cannot publish images taken with them.
A quick note about mounts on Scarlet-X: It's extremely easy to switch back and forth between EF and PL mount. All you have to do is unscrew and screw 4 torx screws back in. Especially if you want to use PL you should calibrate your backfocus afterwards.