Things about my Fuji X100S
Fuji X100S is one of my favourite camera, although last year Fuji released X100T which is a better camera, the X and T share the same sensor which means they have the same image quality. X100T has much faster auto focus speed and better controlling, if you are looking for a camera like that I will absolutely recommend the T over S. Those pros and cons bellow are suitable for both S and T.
Pros:
1, It's light weight, and small. I can easily carry it around the city for whole day. And it's has an APS-C sensor.
2, If you love using film cameras, you will love the controlling on X100, It has aperture dial and shutter speed dial. It's supper useful when I shooting street.
For example, I leave my ISO at Auto, Shuttle speed at Auto, and my aperture ring is at F2.8. Suddenly something interesting coming really fast, I can just roll my shutter speed dial to something like 1/1000 and I know I will get the shoot. In modern DSLR, I have to change from AV mode to TV(S) mode to do that.
3, It looks handsome and gentle! I can bring it to a group dinner, a party, pub, even night club. It doesn't looks like those aggressive DSLRs. And because it's rangefinder style, people will think it's a film camera.
4, It has a really nice hybrid viewfinder. One click switch from OVF to EVF, switch from seeing outside the frame line to exactly composition. This is the digital camera most like a old rangefinder, and it can shoot much closer and preciser than rangefinders when using the EVF.
5, It has a leaf shutter than a normal focal plane shutter. The leaf shutter makes your maximum flash sync speed is your maximum shutter speed. For compression, the maximum flash sync speed of 5D Mr.3 is only 1/200, and X100 can easily sync the flash at 1/1000.
Which can let you easily dark the background when using a flash. (Bellow are sample images)
6, It's has a 35mm equivalent lens (35mm is my favourite), and the biggest aperture on the lens is F2. and a build-in 3-stop ND filter.
Cons:
1, The battery life is short, A original Fuji battery can only last maximum 200 photos or 2-3 hours even you are not shooting (turn off OVF power-saving mod, turn on high-performance mod). If I need to shoot whole day (From 10 am to 8 pm), at least I need 5 batteries.
2, Auto focus speed is not fast, it's ok when I shooting on a sunny day, but when the light goes darker, the AF speed goes slower. The AF speed of X100T is faster than X100S, but it's still not even anywhere close to Sony A6000 or DSLRs at the same price.
3, It's expensive, X100S is fine, but I think X100T is a little bit over price. Find a used one may be a good choice.
4, The lens is not changeable, consider at the same price you can get a changeable lens mirror-less camera like Fuji XT10, Sony A6000/6300. Of course not changeable lens give X100S much smaller body and lens than other cameras, so it's a good thing too, but it maybe hard for beginner to only use one lens.
5, Leaf shutter's maximum shutter speed is depends on the aperture, the max shutter speed at F2 is 1/1000, at F2.8 is 1/1300, at F4 is 1/2000 and so on.
6, Although the lens is very sharp at F2.8 and smaller aperture, the lens is not very sharp at F2. And the lens is not sharp at extreme-corner whatever the aperture is. And the lens is really soft when focus at the object closer than 50cm.
conclusion:
I use X100S as a all-time personal carry-around camera, I bring it to anywhere I go. It's not a rangefinder, but the hybrid viewfinder absorbs the advantage of rangefinder and EVF, and it's easy to use.
When I shoot street, X100S is my main camera, the fact that you can see what outside the frame in OVF brings a big advantage than traditional DSLRs and mirror-less cameras.
Or if you want a camera has great image-quality, but light-weight enough to carry-around everywhere, X100S/T will be a good choice, just remember to bring more batteries.