And I am also using a CANON 5DSR 50MP but found out that at slow speeds (when shooting indoor around 1/40 to 1/100th), even with a stabilized lens, I had not so great results, this is a bit better with the sony. I suspect this is because of the mirror shock (the sensor being not stabilized) ? So now I am using it with a GIGAPAN head to take automatic panos of large spaces.