Canon too ... but then the four-thirds lenses are smaller still, except for ultra-wide-angles. No it won't. The laws of physics - especially quantum uncertainty - are the limiting factor. Yes. More photons, less uncertainty. If it works well enough for you to consider spending more to be a waste of money, that is a totally sane attitude.... .... but that wouldn't bother me at all. WWII was won on the principle of "second best today". With a few exceptions, the German military hardware was better than the equivalent Allied kit, but, because of continual refinements, they were unable to get it into service early enough or in large enough quantities to significantly affect the outcome.