30mm x 15mm sensor
5,120 x 2,700
36mm x 24mm
6,000 x 4,000
4-perforation Super 35mm
24.89mm x 18.67mm
3-perforation Super 35mm
24.89mm x 13.89mm
RED ONE 4K
22.11mm x 12.44mm
4,096 x 2,304
I'll start with the Epic S35.
To start with, the resolution confuses me. The sensor's dimension is 2:1 but the pixel dimension is 1.896:1. Since some of the sensor is probably blocked off for black calibration, I will assume that the 30mm x 15mm sensor area refers to the 2:1 pixel resolution of 5,120 x 2,560.
If we shoot the standard 24.89mm x 13.89mm 3-perforation Super 35mm size on the Epic S35 sensor, I come up with a recorded pixel area of 4,248 x 2,371.
Moving onto the Epic FF35. By the same math, I come up with a 3-perf resolution of 4,148 x 2,315 and a 4-perf resolution of 4,148 x 3,112.
Conversely, if we decided to shoot the RED ONE's 4K sensor size, the S35 would capture 3,774 x 2,123 and the FF35 would capture 3,685 x 2,074. Not that this is a desirable sensor size... but it's valid for comparison.
This doesn't bother me personally - I'm more excited about the dynamic range, frame rates and body design. Just wanted to let people know what they'll be getting by the current math.
So, to sum it up:
Epic S35 3-perforation recording resolution
4,248 x 2,371
Epic FF35 3-perforation recording resolution
4,148 x 2,315
Epic FF35 4-perforation recording resolution
4,148 x 3,112