right, so
RX100 mk 3 vs Canon SX730
Canon + points:
zoom
720p (this is what swung it)
nicer grip
slightly sturdier feeling flash
canon - points
it MIGHT help if the "auto" icon on the wheel was slightly more obvious - in a green box or something
the display of the canon seems to be a bit grainier than the sony.
possibly not as many image quality settings as the Sony
sensor size compared to Sony altho yet to discern quality of this in a perceivable situation
Sony + points
downwards tilting screen, but screen hinge did feel quite flimsy
image quality setting - altho I didnt actually test this
sony - points
not as nice grip
no 720p
flash popup felt flimsy
possibly a bit gimmicky?
strangely, the sony came with a data cable but not a seperate battery charger. Canon came with a battery charger but not a data cable.
now I have some similar images I took with both cams. I'm taking a photo of a tree in the back of our garden. also I did a low-light test in the evening.
interestingly...on the Sony display...the low light images came out better than on the Canon's display. but having looked at both images on a computer screen, there might not be a great deal in it. also in low-light, I don't know if the Sony had trouble auto focussing (taking a photo of a pond+plants 6 feet away), so good low-light performance might be offset anyway.
is there somewhere apart from google albums I can upload. I also took some pics of the moon (daytime, light blue background) with the Canon (Sony didn't have enough zoom). altho it was a spur-of-moment photo before it started raining, it was hand held at 40x zoom, not a tripod. moon photo's did come out pretty reasonably
oh the other thing I noticed, was that taking a photo of the garden, the Canon gets more left/right/up/down scenery in. The Sony just fitted the tree in the frame, whereas the Canon has a bit of sky & left right border