Just a follow up to Michael's video report on the Canon G3X. Currently I have a Panasonic GH2 with 14-140 and 100-300 as a general walk around and for long lens work. (I also have 3 x DP Merrells) It occurs to me that this could do everything my M43 does - I wonder how a) the longer settings compare to the Panasonic 100-300 and b) how the Canon might perform at ISO 800-3200 compared to an older generation M43 sensor?