Comparison...

Some shots of the deer last night - on all three cameras.

The Canon G3X...

The Panasonic Lumix ZS100...

The zoom lens on the Lumix isn't as long as on the G3X, the reason the deer seems further away.  Detail is good, as evidenced on the shot of Izzy (while she was keeping an eye on the deer).

And, finally, with the old Canon SX700 (that will be replaced by the Lumix)...

The fawns and the momma deer.  As expected, detail is not as good with the older technology.  The image stabilization not as effective.  It is a slightly smaller camera than the Lumix.  When it is stable, the image is good.  This camera has a smaller sensor than the new ones.  It has taken a beating on the boats this season, with the thin blades that cover the lens when closed getting bent.  It has been carted around in a pocket, on the scoots, in the car... it hasn't had an easy life.  Time to give it a rest.

It has been said, "The best camera is the one you have with you."  That makes the pocket cameras my "first grab."

The Canon G3X (left, below) has a great zoom lens (24 - 600).  It is a beefier camera and feels nice and solid in my hand.  Weather sealed.  This will be a "carrying" camera, not pocketable.  The electronic viewfinder (not shown) fits in the hot-shoe, making it feel much like a DSLR.  This is going to be the go-to camera when I feel like carrying it around.  It replaces a Nikon DSLR and a couple lenses.  More convenient than the DSLR, probably not as fast to use.

The Lumix ZS100 (above right) has the ability to take 4K still/video images.  Trying to get that and the 1" sensor in that smaller body means a shorter zoom lens (25 - 250) in order to get it to fold mostly into the body.  It is a bit bigger than the older Canon SX700 it replaces, but still small enough to go into a jacket pocket.  Besides the rear touch screen LCD, it has a small viewfinder - great when you can take time to compose... it turns on automatically when you bring the camera up to your eye.  Being left-eyed, my nose goes right on the LCD screen when I use the viewfinder; we'll see if it is an issue during use.

About that 4K capability: this camera has the ability for selective focus after you shoot... if there is a subject in the foreground and another in the background, you can shoot in 4K mode, check it out on the LCD screen, then touch the subject you want in sharp focus.  It also has a feature called 4K Pre-Burst: it records for a second before and a second after you press the shutter button; you then scroll through each image to find the one(s) you want to keep.  How does it know to record for a second before you press the shutter button??

Nice, capable small camera.