I've condensed the pros, cons & my conclusions here. For more details and lots of sample images showing what the camera is capable of please check out my full real-world review
http://davidcandlish.photography/canon-g3x
An Endless Task
PROS
- Fantastic image quality
- Superb optics - decent aperture and superb zoom range
- Image stabilisation is very good
CONS
- Burst mode is limited to 6fps - competitors are at least double that
- AF suffers in low-light conditions
- Lacks 4K video
- Battery life is average at best (buy a couple of spares)
- No built-in EVF
- Weird green tinge to AWB shots
Viewed in isolation, it's hard not to be thoroughly impressed by the G3X. Canon have paired a cracking lens & sensor and the images this camera is capable of producing are very, very good indeed. Canon's G-series are going from strength to strength, first with the G7X and now again with the G3X. For the travel photographer it's a serious option for a small, self-contained and relatively inexpensive to boot at only £700GBP/$1100SGD/$900USD.
Competition from the Sony RX10-II and Panasonic's FZ1000 is stiff but each of the cameras in this class offers us something different. This is great for photographers, we can choose what we need the most and there will be an outstanding bridge camera available to meet that need. The G3X is holding the crown for sheer versatility by virtue of its awesome zoom range and I'm sure there will be photographers out there who view this as a convenient way to get 600mm of reach with good image quality to back it up.
I'll be doing a side-by-side comparison of all of these cameras soon but if you are looking for an all-in-one package that's smaller than an SLR and can produce some stunning images, the G3X might just be for you.