I rented the "R" version and found that my technique had to be spot on to get the resolution the sensor offered. I did several multi shot panos and wouldn't lock down for each frame and relied on the tripod and shutter speed - 1/200 and several of my shots upon close inspection had camera motion blur from me mashing the shutter in a hurry to take the 200 frames.

The lesson - technique, technique technique - a gentle shutter, good support and faster than you think shutter speed.

Mike