See: http://www.flickr.com/photos/kyo4890x115/sets/72157627309252250/with/5988317954/
via: http://forum.pentaxfans.net/showthread.php?t=116103 (in Traditional Chinese)
To download the original, click the "View all sizes" button and then select the "Original" size in 7264 x 5440 pixels.
Inspect on the IQ for whatever aspects you like by yourself. I blog, you decide!~
Btw, 40MP seems to be a quite huge number of pixels up till now but it seems that it will be a thing of the past very soon, I'm afraid. It is most likely that the new Sony ILDC and SLT cameras will have new Sony 24MP APS-C sensor with a 4um pixel pitch size. To side track a bit, the diffraction limit for that 4um sensor will be at f/5.6 smallest for the aperture, before the sensor out-resolves the lens, nevertheless. With the same manufacturing process and technology for the same pixel pitch size and density, it will be possible to make a 9000 x 6000 135 full frame sensor which is just a 54MP one in 36 x 24mm and already has more pixels and a higher count than the current 645D body with the old-style Kodak CCD sensor in 44 x 33mm.
Related:-
Comparison of Sensor Specs - 645D Against Others
Wednesday, August 03, 2011
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Comments by IntenseDebate
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Michael · 710 weeks ago
Alex · 710 weeks ago
And by the way, you're dead wrong. Take a look here: http://www.imaging-resource.com/PRODS/645D/645DA....
What does Imaging Resource have to say about the "old-style Kodak CCD sensor"?
"We've never seen so much detail from any camera we've tested, of course, including on the olive oil bottle, which appears to have much more texture than other cameras can reveal. Indeed, we had to go down to the lab and inspect the Still Life test target again to verify the incredible detail that the Pentax 645D finds from several feet away with the 75mm lens.
The mosaic bottle label is from an offset press with a fairly fine halftone pattern that we've never noticed before. As such, the purples, blues, yellows and greens that appear between the black tiles in the 645D's image are really there, as are the slight color patterns in the character's cloak.
For the first time, all of the fabric swatches show clearly visible threads, whereas only a few do on the 1Ds Mark III and D3X. At its base ISO of 200, the Pentax 645D does better with our most troublesome red leaf fabric swatch than any camera to date. Clearly the Pentax 645D outresolves the Canon 1Ds Mark III at ISO 100, but that's really no surprise given the 2x higher megapixel count. We weren't expecting to see so much more detail, though."
Will the small format cameras be able to surpass such a difference by only doubling their resolution? I don't think so.
And let's not forget, your 54MP sensor is just a "should be possible" scenario but you're comparing it with a m.y. 2010 real product.
Chris · 710 weeks ago
It is a wonderful camera, no question about that. Definitely the best bang for the buck in the digital MF available today.
Ricoh has made such a great deal with Pentax, I hope they respect that heritage and know how to continue it...
Denis · 710 weeks ago
RiceHigh 110p · 710 weeks ago
Robert Van Natta · 710 weeks ago
as to what you are trying to tell us.
I think you are trying to say that soon the Megapixel (MP) race will be over as we are arriving at a point where where optics instead of sensors will limit Image quality (IQ). Likewise we generally think of our optics working the best in the mid F/stop range, but I do not understand how this all fits with what you are telling us. How about an explanation for dummies like me as to what your message is?
RiceHigh 110p · 710 weeks ago
1. The larger the sensor, the less it is affected by the diffraction limit and the more you can stop down a lens;
2. The larger the sensor, the more pixels you can have, before the diffraction limit is reached;
3. But yet to some point and extent, more pixels would be just useless, if the number of pixels is just already very huge but the diffraction limit has not yet been exceeded.
4. Lenses are not performed the best near wide opened, owing to sphericial aberrations.
Toomas Kadarpik · 710 weeks ago