I'm guessing that the S70 can probably DO this same sort of wizardry, as
well. However, my guess is that there are a couple of things going on.
First, it always seems to be about product differentiation. The F505V
bears a lot of internal similarities to the S70, while in the minds of
many a consumer seeming to be at a disadvantage to the S70 b/c of its
smaller number of usable pixels. I think it was simply a decision made to
go ahead and drop this extra interpolated mode as both an experiment from
their Sony Lab, as well as to give the F505V a little kick in the pants.
I'll also bet that they didn't expect it to work quite so well!
Secondly... Oh, I think I already gave my two gueses up above.
Whatever the reasons, I'm sure that the image COULD be bumped up higher,
but as the Fuji images seem to demonstrate, that would negate the entire
premise of image quality upon which these cameras and their Carl Zeiss
lenses base themselves.
Waddya think of that?
I'm curious about why the interpolated image size is 2240x1680. S70 has
image size of 2048x1536, which gives exact 3 MP ( 3x1024x1024). 505V
doesn't stop there. It goes further to make 3.6 MP. Then why it doesn't
go even further ? I am trying to figure out the story behind the number
2240. That might be the limit that the interpolation with 12 raw data can
reach. Beyond that point, we may be seeing the digital interpolation
effect ( images just get bigger without more information ) OK, then
again, why s70 doesn't provide its own interoplated image size like 2472
? Then it will be 4.4MP camera like Fuji super CCD models !