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Message: <blockquote data-quote="J-see" data-source="post: 472378" data-attributes="member: 31330">The noise of the D810 is related to the full well capacity. A smaller pixel can have a similar full well capacity as a larger pixel if the quantum efficiency of the sensor improves. The lack of surface area will be compensated by the increase in photon count. That's why BSI sensors manage that increase in Mpixels without sacrificing quality. The pixel pitch gets smaller but the QE increases. If you manage to register the same amount of photons, it doesn't matter how, you'll have the same quality of signal. Also let's not forget that a part of the so-called ISO performance is fake and depends purely on in-cam noise-filtering. Which doesn't really filter noise btw, it just averages signals.Diffraction affects sharpness because it "pollutes" neighboring pixels which is why images get softer and softer beyond some point. The smaller your pixels, the earlier this occurs. You can shoot your landscape at any aperture you like but, depending the cam, the more you close down, the less your options with that shot. That's all there is to it.It's easily verified, especially at its current extremes. Shoot anything with an FX pushing it beyond f/22 or a DX beyond f/15 (if I'm correct) and then crop to 100% and see what you think of the shot. I certainly can't use those any longer at that crop level. I start deleting them long before since they're too soft.I rarely shoot any landscape above f/8 btw. There's no need for more unless I'm shooting straight into the sun.</blockquote>

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