So I got a G5X Mk2 - My thoughts

The benchmarks out there are straightforward; the Sony prioritizes resolution on the wide end, and falls off the further you zoom. The Canon prioritizes both ends of the lens with it capping out in the center of the range, much like a traditional optical design.

I find Both lenses - G7X series and the G5X-II simply get better as you zoom especially regarding optical issues ...... Natively , they start off with the down a toilet roll / heavily distorted & CA riddled 24mm look compared to the sony fast Mk3/4/5 which at 24mm has no toilet rolling , less distortion and CA (the slow Mk6/7 lens has more than the Mk3 etc but less than the canons ) ..

I find the canon lenses just get better from thereon - the G7X series from about 35mm , the G5X Mk2 from 28mm (about 10mm actual focal length) have lost the tunnel effect and most of the distortion - at 75mm the Sony Mk3/4/5 are soft at "70mm" F4 at infinity, though not as soft as the old MK1/2 lens anywhere , the canon lenses as I say get better and better and are great even at full zoom at F2.8, right across the frame in the case of the G5X-II @ 120 ..

I wasn`t knocked out with the Sony Mk6/7 lens which wasn`t as good as the Mk3/4/5 optic up to about 35mm and hard to hold steady at 200mm unless high shutter speeds were attained (Poor OIS) and wasn`t fantastic for sharpness at distance, also the one I tried (a Mk6) wasn`t great at the EDGES at the long end - I found this very disappointing for the hysterically high UK shelf price of this camera given the breathtaking performance of the RX10 Mk3/4`s fast 24-600 ..... OK its a lot better than a Pan TZ100 or TZ200 but at twice the price it ought to be ..

I don`t care about test charts, I never shoot the things for leisure so only go by real life scenes and lenses perform differently at test chart range to real life so this is how I found the cameras' lenses in the real  . I always shoot RAW and use capture one which allows you to add as much distortion correction as you want or need as in some scenes you can get away with a lot less preserving edge detail at 24mm. I`m mightily impressed with both the canon lenses at the longer end of things and the G5X MK2`s optic has less optical issues throughout - both have superb IS systems onboard .

I did like the RX100 Mk3 (they`re rather affordable used too) but my leisure photography involves a lot of compressed landscapes and street scenes and I found the 70mm end soft for that and the camera none too ergonomic , the G5X-II is Kinda like what I`d expected a true RX100 Mk6 to be (apart from AF etc) , LIke a Mk5 but more of it instead of the "Lets make a Decent TZ100" type cam the Mk6 turned out to be - may be they should have called that the RX50 or RX100X