mosc: Soo many comments about f2.5 being better than f4.9 comparing this to an RX100 at tele. Wow, do the math!
This camera is f11.8 equivalent at 112. The Sony is f13.4 at 100. Complain all you want about it but at least do the math correctly people.
or realize the real difference here is that one has a hot shoe, an option for an externa viewfinder, and is intended as a general purpose camera where the other is a carry anywhere compact designed for indoor shooting without an external flash at wide. The user who picks the Olympus and uses it without anything in the hot shoe probably made the wrong purchasing decision. Similarly, the user who never brings the sony with him because it doesn't have a viewfinder or external flash probably should have gotten the olympus.
From the result against XZ-1, RX100's ISO advantage seems to benefit from ISO800 and up.
zodiacfml: This is everything I want but the sensor! The lens is huge. I'm sure it could accept a one inch sensor and compromise on maximum aperture or some vignetting wide open. I was hoping a larger sensor to compete against the Sony.
f/2.5 at the tele end is a very desirable feature as faster shutter speed can be used. Its not 3 but a 2-stop faster advantage over the Sony until its over ISO800 then the low noise sensor of RX100 kicks in and narrow the gap.