OVP… How did my fumble fingers hit P instead of F? =)
You don't see me throwing my medium format lenses away… If only I was rich enough to obtain a MF back. Ah, Dreams and back to shooting at F48.
Erm regarding small sensors, the resolution is there, its just that they regularly do not put top notch glass in front of them. The smaller the sensor the better the glass required. Therefore from a bigger sensor cheaper glass can be used obtaining the same resolution. So instead said sensors get crippled due to diffraction. Right now we are indeed to the point that small sensors can outresolve the glass in front of them and obtaining higher resolution will require a larger sensor or diamond lenses. Hmm which one will happen first… Yea, Diamond lenses! Uh, no that won't happen anytime soon. I see guys trying 1" sensors… Probably very near the sweet spot for what the average Joe really wants and what good glass can resolve. Just waiting for SN ratio of said smaller sensors to increase obtaining dynamic range and color fidelity.
Reminds me of the D800 and its 32Mpix. Its frankly useless resolution unless you have a dead steady tripod and very good glass. Same with 24Mpix cams. True at any resolution/camera, but its exacerbated the higher your resolution.
Eventually the silicon on small sensors will have same Signal to Noise ratio equivalence as what is obtained with larger sensors today. Frankly IMO, sensors of APS-C are more than adequate for 99.999% of what is desired from anyone today. Give it 2 years(or less) and m4/3 with half the silicon area will surpass that of APS-C today. We already see this in that m4/3 easily parallels any(FF) old camera from 5 years ago, and 12mpix 1/7th sensors etc have better or equivalent dynamic range and color space as FF 8 year old cameras baring the outlier of the Fuji S5 pro. Won't be long till the small sensors have equivalent dynamic range and color fidelity as APS-C does today. It is already way past the point that unless you are shooting RAW you may as well be using a P&S compact camera in regards to dynamic range, just folks put crappy alogrithims in most of these small sensor cams so they blow the highlights. Those folks who do, have a very good camera, like the Canon G series and the Fuji cams. From my experiences playing with my "measly" 16mpix Pentax K-5 and its 14 stops of dynamic range, it is equivalent and frankly vastly superior to 4×5 film, let alone 35mm. The only place 4×5 still has it beat is in Total resolution in a single picture, though not really. Now cams like the Nex-7 have this ability at half the weight! Of course with stitching, the only folks who need super high resolution single frame cameras are those who do flower photography or other highly detailed motion photography that one wishes to blow up wall sized.
Oh yea, there is one other reason to go with FF, Tilt Shift lenses. Though personally I have not tried to adapt a tilt shift onto a APS-C. Don't know why it wouldn't work.
PS. Personally I find the super super wide angle lenses useless due to the advent of stitching seamlessly and dead pipe simple software to use. Add in the fact that distortion is likewise eliminated this way, though that too can be corrected in computer, though it still looks weird to my eyes for some reason.(Biased I guess)
PPS. All of the above is pretty pointless to those wishing to take landscape photography pictures, other than we the end backpacking consumer get smaller cameras with the ability to take amazing pictures equivalent to that of film(still haven't really surpassed film though in some instances using RAW we have) without all the hassle of film.