On RED's website http://www.red.com/epic_scarlet/
The optional Epic 617 pro sensor boasts a 28k resolution at 30 fps, incredible.
If you go down the page, you will thee that the sensor is HUGE, and is about
6.7 x 2.5 inches! I WANT this camera!
Picture quality is probably so detailed that you can't even see the full resolution with your own eyes.