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Nikon DSLR Cameras
D800/D800E
What's the point of all those pixels
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<blockquote data-quote="WayneF" data-source="post: 301982" data-attributes="member: 12496"><p>Right. And just to elaborate on your point 1, the D800 image is 7360x4912 pixels on a 35.9x24 mm sensor. So this is 205 pixels per mm.</p><p></p><p>Without getting bogged down in it, let's claim a sharp lens can resolve 100 line pair per mm. So this is 200 lines per mm, and if those lines were somehow precisely aligned with the sensor pixels, the D800 sensor can resolve them. But of course, they cannot be aligned, and the Nyquist rule is we need at least a minimum of 2x this sampling frequency (and more is better). </p><p> So... the D800 really is not enough to resolve what a good lens (in good conditions) can do. Which to do so could be a goal.</p><p></p><p>But if all we are going to do with the image is to show in on a video monitor screen, or to print it 6x4 inches (both being greatly smaller images), then yes, a much smaller camera would suffice. But then again, that is all you would get. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="WayneF, post: 301982, member: 12496"] Right. And just to elaborate on your point 1, the D800 image is 7360x4912 pixels on a 35.9x24 mm sensor. So this is 205 pixels per mm. Without getting bogged down in it, let's claim a sharp lens can resolve 100 line pair per mm. So this is 200 lines per mm, and if those lines were somehow precisely aligned with the sensor pixels, the D800 sensor can resolve them. But of course, they cannot be aligned, and the Nyquist rule is we need at least a minimum of 2x this sampling frequency (and more is better). So... the D800 really is not enough to resolve what a good lens (in good conditions) can do. Which to do so could be a goal. But if all we are going to do with the image is to show in on a video monitor screen, or to print it 6x4 inches (both being greatly smaller images), then yes, a much smaller camera would suffice. But then again, that is all you would get. :) [/QUOTE]
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Nikon DSLR Cameras
D800/D800E
What's the point of all those pixels
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