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Advice please on the 24-70....
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<blockquote data-quote="WayneF" data-source="post: 492914" data-attributes="member: 12496"><p>Yeah, DxO must think they are testing camera sensors. The sensor sampling obviously does limit what the lens can do (insufficient sensor resolution fails to deliver what the lens did, which is what causes moire - using less than minimum sampling for the detail that exists). That's always been true, we've always needed anti-aliasing filters, but today, we are beginning to dare to remove a few anti-aliasing filters, meaning that our sensor resolutions are finally just barely approaching the MINIMUM sampling of the detail that the lens can deliver (except the filter decision did not know which lens. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> ). And the Minimum is just Minimum, oversampling obviously has much to be said for it.</p><p></p><p>So to rate lens resolution in megapixels is just plain stupid, They just made that up, and either they don't know, or they are just hoping to standout somehow by impressing beginners that don't know either. Reporting lens results based on insufficient sampling (less than the known minimum requirement) is stupid, or fraudulent, or something very bad. Certainly it only depends on the sensor used, so the plan is just dumb. They may imagine if this is the sensor used, more lens doesn't matter, but this ignores oversampling, which is always a very good known thing. DxO is nonsensical meaningless numbers, we should look for more orthodox standard lens testing methods that actually test lenses. </p><p></p><p>Digital sampling sort of has its own rules, regardless if DxO knows them or not.</p><p>See obvious evidence at <a href="http://www.scantips.com/lights/reslimit.html" target="_blank">Have we hit a megapixel resolution limit?</a></p></blockquote><p></p>
[QUOTE="WayneF, post: 492914, member: 12496"] Yeah, DxO must think they are testing camera sensors. The sensor sampling obviously does limit what the lens can do (insufficient sensor resolution fails to deliver what the lens did, which is what causes moire - using less than minimum sampling for the detail that exists). That's always been true, we've always needed anti-aliasing filters, but today, we are beginning to dare to remove a few anti-aliasing filters, meaning that our sensor resolutions are finally just barely approaching the MINIMUM sampling of the detail that the lens can deliver (except the filter decision did not know which lens. :) ). And the Minimum is just Minimum, oversampling obviously has much to be said for it. So to rate lens resolution in megapixels is just plain stupid, They just made that up, and either they don't know, or they are just hoping to standout somehow by impressing beginners that don't know either. Reporting lens results based on insufficient sampling (less than the known minimum requirement) is stupid, or fraudulent, or something very bad. Certainly it only depends on the sensor used, so the plan is just dumb. They may imagine if this is the sensor used, more lens doesn't matter, but this ignores oversampling, which is always a very good known thing. DxO is nonsensical meaningless numbers, we should look for more orthodox standard lens testing methods that actually test lenses. Digital sampling sort of has its own rules, regardless if DxO knows them or not. See obvious evidence at [URL="http://www.scantips.com/lights/reslimit.html"]Have we hit a megapixel resolution limit?[/URL] [/QUOTE]
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