At José's request, I've started this thread as a jumping off place for continued discussions regarding a link that Marcus posted over on his thread: https://www.photographerslounge.org/f46/why-cant-compact-zoom-full-frame-digital-camera-built-film-ones-existed-411/ in which he referred to an article, dated June 2008, that has been published in Luminous Landscapes: "Do Sensors "Outresolve" Lenses?, written by Rubén Osuna and Effrain Garcia.
Here is the introduction from the linked article, to whet your appetites:Marcus -
Thanks for linking to an amazing article. I just "read" it, and I think after a couple more tries (maybe this weekend) I might actually be able to follow it.
I think this link is worthy of its own thread. If several of us try to read it and report our understanding of the content, we may be able to (together) do a better job of understanding all of the concepts involved.
(And I thought I already understood what a Circle of Confusion meant, based on DOF discussions. Now I realize I'll have to rethink some of those assumptions too.)
Now we have a thread devoted to this article as a reference. Enjoy the article, and the continued cogitating!We read everywhere that new high resolution sensors put pressure on actual lenses. These comments arise copiously each time a new sensor with higher pixel counts appears. It happened with the 22 millions of pixels of the Canon 1Ds Mark III, and it will happen again when the 25 MP sensor by Sony comes to life into a new camera. Are this kind of comments accurate? There is no short answer to the question, because the subject is complex. However, we will try to summarize several basic rules and results, closing a previous discussion at The Luminous Landscape.