mmmhhh, I have on this netbook only GIMP and the images look not that good. But at least you get a first impression.
The viewfinder of the X100 is excellent. The hybrid modus practical, but I like to shoot with the optical VF. I am a kind of dinosaurier in this photo-world
The framelines within the OVF are better visible than in my Leica M6 during sunlight! The additional information in the OVF a great help. Aperture, distance information, exposure compensation etc. etc. Really good to have these within the OVF.
It makes really fun to take photos with the X100. Very simlar Leica M-feeling, although there are many little details better on a Leica. But hey, you pay for a M9 also a little premium over the X100
High ISO with the X100 is VERY good. But what I like the most is the effect of the very thin AA filter in the Fuji X100. It reminds me often to the Sigma images with my SD14/SD15 with the Foveon sensor (the Foveon sensor does not need an AA filter). Not always, but often. And a lot more often than i.e. my Sony Alpha 850 or other DSLRs (except Leica M8/M9, which neither use AA filters).
With the few shots I have taken so far, the major complain would be some usabilty issues of the firmware (I am sure this will be fixed with the already announced next firmware update) but above all the exposure compensation ring. This turs too easily. Many shots got over or underexposed because of touching it when taking the X100 out of a bag.
So you have to concentrate and check this either outside or in the VF before taking the shot.
The X100 looks like a rangefinder, but it is not. It is basically a P&S. AF in very close distances not that easy and framelines are more an indication than a mathematical science. I wear glasses, so the Parallex problem is as always even worse with that technique.
You find on the net very good reviews alread. Marcel Reichmann for example:
I am not a big fan of scientific tests. What counts for me is how the images look for me in print and on screen and the handling /ergonomics. Whethere noise is 2 bips worse or whether it can seperate 2 lines more does not matter for me. At teh end of the day, it is also always a question of image processing on the computer. The better you are with this, the better look the images.