gdanmitchell
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 p.4 #9 · 46.1 MP Canon EOS-3D X To Be Announced Before PhotoPlus ? | |
Mescalamba wrote:
I just wonder about one thing.
How Canon think their lens can cope with 46.1 mpix? Cause except some macro and maybe newer TS-E I doubt that..
A few things to think about here.
1. Few people are finding themselves in situations in which the resolving ability of the lens is limiting their print size. Now, if you regularly print at or beyond about 20" x 30" you might start to find some situations in which this is the case, but often other factors limit print size before lens resolution does.
2. At a given print size, your lens will continue to resolve at least as well as it does on the current 21-22MP sensors. Worst case - assuming the unlikely, or actually impossible situation that your current lens is has resolution exactly equal to that of your current sensor - you'll get a print with the same lens-limited resolution on the higher MP sensor. In more likely cases you'll get at least some improvement, to the extent that it matters. And in the best cases, you may be able to produce a somewhat larger print with the same resolution.
3. Lens and sensor resolution will never be equal. Either the sensor will out-resolve the lens or the lens will out-resolve the sensor. (It is even more complex than that: aperture makes a difference, as does where you measure within the frame, etc.) Ideally, it makes sense to have a sensor that out-resolves your best available lens resolution - e.g. the center resolution at the best aperture on your best lens.
4. Higher resolution can have additional beneficial effects beyond simply greater pixel resolution. For example, gradients might be more smoothly rendered. Whatever noise there is in the image will have smaller grain. And so forth.
5. If current lenses have sufficient resolving power for the current highest MP cropped sensor cameras, the higher pixel-density full frame cameras won't challenge lenses at all.
Technology marches forward, despite what some might claim to think. I recall that when we had 6 MP sensor people complained that when camera companies went to 8MP that there would be too much noise and that we had enough resolution already. Same when we went from 8MP to 10MP or 12MP. Same when full frame sensor cameras came out with more than 20MP. And now... same old, same old. Funny thing, the vast majority of us a certain that image quality has not declined in a way that would have been predicted by those nay-sayers all along the way and, if anything, it has continually improved.
Dan
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Much like when Nikon said crop sensors were best then suddenly when they had a ff sensor that was the way to go.
