It happens that there was a short article on this in the current Economist magazine: http://www.economist.com/node/21527019
stan On Sep 15, 2011, at 8:36 PM, John Francis wrote: > > That's mostly incorrect. > > The plenoptic cameras don't record images in the traditional way; > what they record is far more like the mosaic image insect eyes see. > > Post processing converts the recorded data into a more typical > view. One of the things the post-processing can do is recreate > depth-of-field effects at an arbitrary plane of focus (including > the sort of effect you get from a tilt lens, and even non-flat > 'planes' of focus. Or, if you want, it can produce images with > everything in focus. > > The downside of attempting to derive distance information (which > is what you have to do to simulate depth-of-field), and all the > other possible tricks, is that you will end up with significantly > reduced resolution. As a ballpark figure, you're going to lose > about one order of magnitude in pixel count - sometimes even more. > > > > On Fri, Sep 16, 2011 at 10:15:00AM +1000, Paul Ewins wrote: >>> From what I have read, but maybe misunderstood, it has multiple planes of >>> focus and you can choose which one you want afterwards. It is kind of like >>> one-shot focus stacking. The downside is that this reduces the number of >>> pixels used in the final image quite dramatically, since a lot of the >>> others are out of focus and get binned. it is an idea that is waiting for >>> sensor technology to catch up before it is useful for photographers. >> >> Paul Ewins >> Melbourne, Australia >> >> On 16/09/2011, at 9:47 AM, J.C. O'Connell wrote: >> >>> whats with this new technology where you can change the focus of the photo >>> AFTER its captured? >>> >>> -- >>> J.C. O'Connell (mailto:[email protected]) >>> Join the CD PLAYER & DISC Discussions : >>> http://tech.groups.yahoo.com/group/cdplayers/ >>> http://launch.groups.yahoo.com/group/cdsound/ >>> >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
