Originally posted by Nesster Yes, but will that be economical for the manufacturers, as at that price point you get severe competition from other formats, and no longer have the SLR 'quality advantage' to bank on. I know I bought a NEX at $250; my cell phone contract would get me a phone in that range; or one of the quality compacts would make much more sense than a SLR, at that price.
At $500 the SLR is still a hard sell -- already (though I'm a minority in this) I don't consider anything but a K-30 as a sensible buy in the APS-C SLR format. I'd be much more interested at a top-end mirrorless of some kind, or stretching the extra $250 to get FF in this future scenario. Right now it's more difficult, as Nikon doesn't truly have a K-30 equivalent (low price - limited lens compatibility; or a D7000/7100 at the K-5 II price point), and the price penalty for a D600 is still very high.
I suppose there will be people who would rather pay $750 for a fancy APS-C SLR; but if you could get (even a down-spec'd functionality) FF for the same price, and one that does the Nikon trick of adjusting to APS-C crop with APS-C lenses....
I wish I could speculate with Pentax, but I'll use Nikon as a substitute. Once the FF camera is where the D7000/7100 are now, price wise, Nikon's got a bit of a marketing problem. Do they move the prosumer (i.e. screw drive support, metering support) to the lower consumer area (D5100/5200 etc on down) and in turn move their crippled cameras even lower? I suppose Nikon could support an ultra PRO APS-C D300 successor at the $1-1.25K level, but I dunno.
There's also the pixel count argument, in that at some pixel level the APS-C will start to lose its price advantage...
Prices tend to stabilize. APS-C starts at $85 for a first run sensor then drops to about $45.
FF starts at 2.45x that just because of unavoidable technical issues with photolithography.
And FF requires much larger data buffers and pipes, which are costlier physical components.
Cooling is also a factor, as is more power.
Just getting an FF sensor out the door on a circuit is probably 4x APS-C in cost. Add in another 10-15% in form factor size to correspond and FF will always be 2-3 price points higher than APS-C and physically larger.
Economically we then get to the point of efficacy and value.
If we only view web images via Facebook and printing becomes exceedingly rare, and larger formats are not needed (we stream rather than face and gaze) then the price per image comes into play and efficacy enters the market through millions of consumer experiences. This is why many people are starting to say 16-24 MP's (FF or APS) is more than good enough for editing as there is little observable benefit more MP's. The upgrade cycle slows.
So the market will begin to question the $2,000 camera and then the $1,000 camera, and so on as value becomes more important. Nevertheless consumers will benefit by having excellent IQ from a variety of sensors.
This happened with film cameras in the 1990's. We started to see much cheaper polycarbonate bodies mounting polycarb optical housings because for the 4x6 mini-lab print on a roll once per month there was no need to over-invest. Cameras got cheaper (and film actually got more expensive and substantially better) as the consumer market balked at paying premiums. It was a bloodbath. You started to see super-pro cameras like the F4 come out at astronomical prices causing Nikon all sorts of financial grief and consumers getting 90% of that functionality for 30% of that price...on the same film.
We're likely going to see the same effect here as people realize that they will not need to spend more money to get quickly shot and quickly viewed photos online, so the price acceptability will creep down and a $3,000 camera will look silly for Facebook and Flickr. Canon and Nikon will mess with larger sensors than FF just to keep those high margins, and the rest of us will get the price:sensor benefits as the curve bends our way. I love it when that happens. Get ready for the $500 Ricoh GR with an articulating screen and much better video.
There will be a floor of course. Where that is can generally be extrapolated from fixed costs and dynamics like the sensor cost and yields, and the unforgiving costs of batteries, etc.