Pros The optics are great
The macro is great, and coupled with that fast lens
LCD screen is amazingly bright and crisp
Very solid build and well constructed
video is excellent for a compact camera
Cons Autofocus performance has not improved over the S95
Summary Let me start off by saying that my copy of this camera does not appear to have any issues with its image quality. I'm not saying that I don't believe that there are some initial quality issues with this this camera. It's just that my camera seems to work fine in that regard.
That said... at lower ISOs, I really don't see a monumental difference in RAW or JPEG between it and the S95. At ISO400 and above however...there is noticeably less noise in the S100 pics. I wouldn't go as far as to say that ISO1600 is completely noise free on the S100 but it does deliver a much cleaner picture than the S95 did. Detail capture is about the same between the two cameras. Which is to say, pretty darn good. One thing I have noticed though is that the default colors are a little flatter on the S100 vs. the S95. But this is not necessarily a bad thing. It allows you a little more room to adjust it as you see fit.
The camera feels about the same as its predecessors. Very solid build and well constructed. You have a thumb rest on the back of the camera and a tiny indent in the front for gripping. So the camera is very comfortable to shoot with. It also has an extended 5x zoom range.
Like it predecssors, one of the hallmarks of the S100 is the rotating ring on the front which you can customize to adjust almost any function you want in the camera. I cannot overemphasize how useful this feature is. My preference is customize to adjust shutter speed but you can also use it adjust ISO and aperture.
You have two menus on the camera, the regular menu and then the function menu. The function menu contains the most-accessed shooting settings (ISO adjustment, changing from JPEG to RAW). While the rest of the settings are under the regular menu.
Shooting performance is a mixed bag. Shot-to-shot times have improved on the S100 and it is quicker to start up. However, autofocus performance has not improved over the S95. It's acceptable, but, it's disappointing to see that Canon has not improved this aspect of performance over its predecessor.
The video is excellent for a compact camera. Generally very clean and excellent audio. It wouldn't take the place of a camcorder. But it's a great choice if you want a camera that shoots quick videos of decent quality.
The S100 is very good camera but I don't think in some respects it's a very compelling upgrade from the S95. It's picture quality at lower ISOs is virtually the same and its shooting performance hasn't made big enough of a leap. So if you primarily shoot stills at lower ISOs and don't do a lot of night shooting, you really aren't gaining much by upgrading. But if you shoot a lot in low light, want the extra zoom, and/or are new to the S series from Canon. The S100 should be at the top of your list. And if you're will buy the S100, I suggest you have to check for cheap price before you decide at: Checkingprices.info/canon-powershot-s100/
Hope my review helps.
Pros Quality-wise and operational-wise "it's right up there" with its two predecessors (the S90 and S95)... both of which I own. So, if you are or were the happy owner of either of those 2 cameras, you may be comfortable and relatively pleased with this.
Cons Its grip, which is a modification from the S90 and S95, is next to worthless from a functional point of view as it's too shallow to serve any real purpose. I intend to add a Franiec grip to give mine a bit more class and improved grip-ability.
Pros Picture quality is just fantastic across any ambient light.
Cons Date and time stamp is not removeable from Pictures
Summary I have owned 2 of these cameras (kids cracked the original's LCD screen). I did not hesitate to buy the same camera, 10 months after the original purchase-Jan 2012.
This camera simply captures fabulous pictures in all light conditions. The wider angle and depth of field is just awesome and I have never seen a small camera consistently perform without a hitch.
Apologies to my wife , but even she loves using this because it is a foolproof camera that takes great pictures (video is also fine). Children's class visits are no longer recorded via crappy pictures that frustrate me when I come home from work.
I have owned Fuji,many Panasonics and several other Canons (including currently a T2i DSLR) and I have never observed a better compact camera.
If it broke again, I would absolutely re-buy this camera, a third time.
Pros great low light pics
Cons got the dreaded "lens error" on the 3rd day of a 2 week vacation. lens would not retract. had to send back to Canon for the free repair under warranty. search on "Canon S100 recall" for details.
Pros Picture Quality, Features, Ergonomics, Manual Controls, Build Quality
Cons Battery Life (it's the only reason I gave 4.5 stars instead of 5)
Summary I will update this review after playing with this camera for a longer time. However, at the moment, I'm incredibly impressed at what this camera does in such a compact size. Color quality is fantastic. The macro feature is fantastic. I have been a enthusiastic amature photographer for over 20 years, using cameras that go all the way back to the canon A1' to the A2E and a newer rebel DSLR. I've had multiple simpler PaS cameras which I have always been disappointed with - I've been looking for that wonderful smaller camera that has all of the manual controls I want and has great image quality - this camera wraps all that up and more. Very impressed.
Only thing to keep note of: if you're going to be out with this camera for more than half a day, bring a second battery...