All this talk of cramming pixels into a smaller sensor is useless unless the
lens technology can keep up. DSLR lenses are already reaching their limit. My hope is not about shrinking sensors and cramming pixels but for more optically clear lenses that are affordable. Optics aren't crystal clear. They distort, refract, separate light. A pocket cam will always shoot a softer image
than a DSLR, which will shoot softer than a medium format.
@ELPARTO: Yep, that's what it used to look like. You'd run a stong current one way to magnetize the toroids, and... I'd imagine it was by resistance that each one was read... I once saw a memory "core" from an old IBM mainframe that was about the size of a basketball!
So, I wonder what kind of service light a flash image sensor would have, or if the write cycles issue would even apply at all...
It's a zero-sum game. They're shrinking the pixels by 100x, but then their algorithm derives a single super-pixel gray level from 100 pixels.
They're also going to burn a lot of power in their back end processing in order to replace the ADC in conventional CMOS sensors. It's just not true that these burn a lot of power any more.
I strongly suspect that this approach will yield a significantly lower quantum efficiency (QE) than conventional approaches. QE is measure of how many of the photons hitting the sensor get converted in to an electrical signal.
A high QE with high noise is pretty useless, but modern, conventional CMOS sensors have a read noise of just a couple of electrons. That getting very close to high-end CCDs.
You just can't say that CMOS sensors perform poorly in low light anymore. Sure when you make the pixels very small like in cell phones, there's just not enough photons to get a good signal to noise ratio, but large pixel sensors are a different matter.
BTW, this isn't a new idea. People tried this with DRAMs as far back as the 70s.
If they're up to 100x smaller, that should mean you can maintain pixel density and take 100 binary samples per pixel. Using microfilters, I guess you can change the colours and brightness of light that trigger those binary bits, so 100 binary samples per pixel should be roughly capable of producing four 24-bit colour samples.
The question is, how much noise is there, and if you average those 4 colour samples together, do you get a nice pixel with low enough noise?
This was inevitable.
But I'm not sure this would be adopted by any of the major camera makers. They've all got their own R&D sectors that come up with some crazy advances we don't see for 10 years or so. I know Fuji does interesting work with sensor technology, as does Sigma-Foveon, Sony-Nikon and Canon. They've all made advances that should be even better than this, or at the very least complimentary to it.
Once they've accomplished condensing down the image sensor, the image processor, the memory, and the power source into one single chip, then that's when it gets wild.
Oh and btw, it's uncharacteristic of Canon to name their cameras with the D before the digit, that's what Nikon does (D80, D300, D3x, etc.) Canon was always (40D, 5D, 1D, etc.) Just clarifying.
I remember an old article by Steve Ciarcia where he took an off-the shelf DIP style DRAM (remember those?) that came in a lidded package and crammed it in a box with control electronics and an old SLR lens and made a 1-bit depth digital camera.
CMOS is necessary in order to achieve high MTF (resolution). CCDs just can't handle the data throughput required for full HD, and even using technologies like pixel-shift (where each sensor is offset by less than a pixel from each other) still results in a sub-par MTF for 1080p.
The use of CMOS in pro HD cameras is not new. Ikegami, a high-end Japanese broadcast camera manufacturer, has been using CMOS for their HD cameras for several years.
The newly announced <$10k Panasonic AG-HPX305 also uses three CMOS sensors (1/3-inch).
@LittleJon: Interesting point on the resolution. We do reference the that CMOS is not totally new for medium-high end cameras, but it's a big, big deal for Canon to make the jump in this range.
10/13/09
Good find!
10/13/09
10/12/09
10/12/09
10/12/09
10/12/09
10/12/09
10/12/09
10/11/09
"It's a major award."
10/11/09
10/11/09
Are these teeth marks.
I thought it was chocolate.
It isn't!
Then why was it wrapped in foil?!
It was never wrapped in foil!
10/11/09
10/11/09
10/12/09
10/09/09
lens technology can keep up. DSLR lenses are already reaching their limit. My hope is not about shrinking sensors and cramming pixels but for more optically clear lenses that are affordable. Optics aren't crystal clear. They distort, refract, separate light. A pocket cam will always shoot a softer image
than a DSLR, which will shoot softer than a medium format.
10/12/09
I think we're soon going to reach a point where sensor resolutions are so high no one cares anymore and the optics will become the limiting factor.
Canon and Nikon better start working on cheaper better optics (if they are not already).
10/09/09
10/09/09
10/09/09
So, I wonder what kind of service light a flash image sensor would have, or if the write cycles issue would even apply at all...
10/09/09
They're also going to burn a lot of power in their back end processing in order to replace the ADC in conventional CMOS sensors. It's just not true that these burn a lot of power any more.
I strongly suspect that this approach will yield a significantly lower quantum efficiency (QE) than conventional approaches. QE is measure of how many of the photons hitting the sensor get converted in to an electrical signal.
A high QE with high noise is pretty useless, but modern, conventional CMOS sensors have a read noise of just a couple of electrons. That getting very close to high-end CCDs.
You just can't say that CMOS sensors perform poorly in low light anymore. Sure when you make the pixels very small like in cell phones, there's just not enough photons to get a good signal to noise ratio, but large pixel sensors are a different matter.
BTW, this isn't a new idea. People tried this with DRAMs as far back as the 70s.
10/08/09
The question is, how much noise is there, and if you average those 4 colour samples together, do you get a nice pixel with low enough noise?
10/08/09
But I'm not sure this would be adopted by any of the major camera makers. They've all got their own R&D sectors that come up with some crazy advances we don't see for 10 years or so. I know Fuji does interesting work with sensor technology, as does Sigma-Foveon, Sony-Nikon and Canon. They've all made advances that should be even better than this, or at the very least complimentary to it.
Once they've accomplished condensing down the image sensor, the image processor, the memory, and the power source into one single chip, then that's when it gets wild.
Oh and btw, it's uncharacteristic of Canon to name their cameras with the D before the digit, that's what Nikon does (D80, D300, D3x, etc.) Canon was always (40D, 5D, 1D, etc.) Just clarifying.
10/08/09
03/30/09
The use of CMOS in pro HD cameras is not new. Ikegami, a high-end Japanese broadcast camera manufacturer, has been using CMOS for their HD cameras for several years.
The newly announced <$10k Panasonic AG-HPX305 also uses three CMOS sensors (1/3-inch).
[proportal.system5.jp]
03/30/09