A number of articles are taking deeper dives on the camera.http://carpeaqua.com/2013/09/12/apple-will-never-lose-at-photography/http://techcrunch.com/2013/09/12/a-photographers-take-on-the-iphone-5s-camera/http://www.anandtech.com/show/7329/some-thoughts-about-the-iphone-5s-camera-improvements
Yes and no. OIS as implemented by canon and nikon in full size lenses can help keep the framing steady around a moving target, whether that is possible or practical in a phone sized lens I have no idea.What’s missing from the 5S is OIS. I didn’t ever think it was in the cards for the 5S, so its absence isn’t a surprise, but it’s a substantial improvement for video and longer exposures. The reality is that an increasing number of players are including it – Nokia, HTC, and LG, and that list will only continue getting larger. Its absence isn’t the end of the world, but the stronger OIS implementations make a substantial difference for both videos and still images. Apple’s going the electronic and computational route with further improvements to its EIS auto image stabilization, which combines the sharp parts of multiple images together to get a single sharp picture. Almost every smartphone camera system now has a back buffer of images coming from the sensor, Apple purports that it is able to do some computational analysis, grab sections of the last few images and combine them to produce a sharp result. This will help in good lighting where the system can grab a lot of images quickly with good exposure, but obviously doesn’t fundamentally solve the low light problem where the exposures themselves are still longer. Grabbing photographs without blur remains a challenging problem for everyone, obviously OIS doesn’t help with scenes where the subject is moving either.