Got the Scarlet last week and am getting poor results all the way around. Can't get any shots with nice crisp focus. I see noticeable noise in shadows, even when shooting outside at mid-day at 4K & 3k at 5600k and 800ISO at 24fps, 8:1.
Been shooting with the EX1 for the last three years and my EX1 footage looks cleaner than what I'm getting with the Scarlet. I look at .R3D and .JPG stills others have been posting in these threads from various projects and I'm getting nothing anywhere close to as clean or sharp, (even comparing the raw .R3D's without any sharpness added). I'm viewing the footage full screen on a 1920x1080 LCD monitor. My 4k and 3k footage at 1920x1080 looks lower resolution than the EX1's 1080p footage.
I've either got a bad camera or a bad backfocus. Using a 17-55 f3.5-5.6 Canon IS EF lens and an 18-135 of the same kind. I've tried to do everything I can as far as treating the image goes. I'm importing .R3D's into Premiere CS6 on a MacPro. I've set the sharpness to "Maximum" inside Premiere's "source settings" for the .R3D file. I've also added unsharp mask which helps, but is still far from sharp and if anything makes the noise and artifacts more noticeable. In the image below you'll see I have absolutely NO detail in the shadows (like in the bushes on the lower left). You can see the artifacts and noise really only when its in motion.
Here are some images: