Leo "Zoom"

The lens on most of these cameras won't be ever changed. So what's wrong with the plastic?

Real life light gathering difference will be smaller. Actual light transmission - T stop - tends to be significantly lower compared with the nominal F stop on ultrafast lenses. DXOmark tests that, ...

Actually there is one APS-C mirrorless body from Sony - A6500. You can mount a EF or Sony A versions with a corresponding adapter.

If Your target is low light - 2.8 won't make much difference. I'd suggest some 1.8-1.7 prime in the range from 17 to 25 mm. That would be a really noticeable difference.

Purely for low light You have to check the actual light transmission - the T stop. Fastest lenses usually have complicated designs and a lot of glass inside - that causes relatively lower ...

...that a straight comparison lies and a bunch of fanboys are telling the truth? Brave man You are...

I'd suggest getting some normal prime, in the 17-25 mm and f/1.7-1.8 range. They are small and cheap. Especially if bought second hand. For example Lumix 20mm f/1.7.

That's me. I liked to carry a camera with me from film era. But current FF DSLRs are just too bulky - even the small-ish D600. But now I have mirrorless for that - m43 is perfect as an everyday ...

http://camerasize.com/compact/#724.396,699.397,ha,t Why not? :)

Nop. I compared exactly equivalent lenses. That's full frame, You don't have to recalculate focal length for it. And the 2x crop factor for m43. Panasonic 35-100/2.8 vs Sony 70-200/2.8. Olympus ...

That's a smallest FF with almost biggest m43. And short lenses. What about this comparison: http://camerasize.com/compact/#724.514,724.639,673.366,673.93,673.30,ha,t

I doubt it would be very useful in an event. You just move too much, change composition a lot (at least I do) - You will need to adjust it for almost every image. Decent lens hood and careful ...

Never experienced any problems using just the contents of Stream subfolder. These are the original clips. They can be easily viewed and edited. All other files and folders - just a (almost) ...

First of all it is mostly a lot faster. Then - copying files directly from camera often involves some intermediate software, which tries to do some organizing, renaming or even recoding the ...

I'd suggest using card reader

Although a lot of folks here recommend only the "latest and greatest" - I support Your thinking. GX7 is still very capable camera. And You can get some really good lens for the price difference - ...

There may be some. But not that much - if any. Real light transmission - the T-stop - of ultrafast lenses (f/1.2 and faster) usually is noticeably lower than for slower lenses of more simple ...

Completely disagree with #6. My own recomendation is to use review as little as possible. Look at new possibilities, not the taken shots.

This is a friendly forum, not a paid support service. Everyone share their ideas or experience willing to help you. It's definately rude to call that 'dumb' or 'time wasting'. Shame on you.