well EXMOR is not EXMOR R.
the sensor in the D800 is not backlit.
EXMOR:
http://www.sony.net/SonyInfo/technology/technology/theme/cmos_01.html
EXMOR R:
http://www.sony.net/SonyInfo/technology/technology/theme/exmor_r_01.html
I can't believe D800's sensor is not backlit, seeing its high ISO score on DXOmark...
When 36MEG is scaled down to 8x12, or 8MEG, its noise performance is vy close to D3S.
Well, Canon has to double hurry up, if Sony can achieve this kind of ISO without backlit technology.
Astro, do u have a reference quoting D800 is not using a backlit sensor? Tks!
You have to take DXO data with a grain of salt, and since the advent of D800 print DR results, you have to be EXTREMELY skeptical about it. You also have to realize that "Print DR" is an image that has had post processing. We don't know exactly what DXO is doing to those images, but the idea that you can magically gain additional DR above and beyond what the senor itself is capable of (which is what their Screen DR rating is representative of) is extremely fishy.
Riddle me this: If the D800 SENSOR itself is capable of 13.23 stops of DR, and the scene you are trying to expose has 14.4 stops of DR...will you be able to capture the full scene DR in a single shot? The obvious answer is no. The sensor is only capable of 13.23 stops of DR, and trying to expose all 14.4 stops in one shot is going to either blow highlights or block shadows. There is also the simple math problem. A 14-bit sensor is a 14-stop sensor...you would have to go to at least a 15-bit sensor to achieve more than 14.0 stops of native DR with the sensor itself.
The D800 is NOT as amazing as it sounds, and referring to it as "unbelievable" would be about as accurate an exclamation you can get...it literally is unbelievable. The Canon 1D IV has 11.46 stops of DR. The difference between the D800 and the 1D IV is 1.77 stops, or roughly 1 2/3rds of a stop, of dynamic range. Not 2 stops, not 3 stops. The physical hardware differences are far more moderated than DXO, of whom Nikon is a paying customer and Canon is not, would like you to think.
Print DR == BIIIG Grain of Salt (or a big TUB of salt, whichever tickles your fancy...just make sure you really salt it good.)
wrong. it is all about how you quantize the measurement and what scale you use. They don't have to use a linear scale either.
http://www.canonrumors.com/forum/index.php?topic=4747.120you can stretch the 14 bits easily to cover more tonal ranges and since the lower bits are usually just pointless random noise, there is still headroom which is why the D800 is so stellar DR wise. I agree that eventually we'll go to 15 or 16 bits once cameras start pushing far beyond 14stops. But the DR of the D800 at base ISO of 14.4 stops as reported by DXO is absolutely amazing regardless, even if it was just 14.0 stops. To correct your point, the difference between the D800 and the 1D4 is over two stops. not trivial at all.
let's stop the famboysm and recognize that nikon has created an amazing sensor and hope canon can match it. instead of whining we should be excited to have canon follow eventually. I'm sure if it had been canon that did this, we'd be all singing praises to DXO and how they are so accurate.
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