Why does Canon 600D/T3i video quality drop dramatically once it's recorded — in comparison to what I see in Live-View w/ Digital Zoom?
I have a low-light situation with a lot of small details and diagonal lines. When I look at the scene with digital zoom in Live View mode I see some grain but I see all the details and can clearly read the small print. Once I record the same scene in 1080p (I also tried to increase the bitrate with ML firmware) everything gets blurry, aberrations pop up (green/blue flickering edges), lines get broken, and it looks like upscaled 480p. Why does this quality drop happens and is there a way to minimize it if not get rid of it?