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Anyone else see this article from PC World?
Interesting--but at what cost of resources?
http://www.pcworld.com/article/23086...l_wbx_h_crawl1 or Tinyurl: http://preview.tinyurl.com/3o6t33t Allen |
#2
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Anyone else see this article from PC World?
On 06/27/2011 09:37 AM, Allen wrote:
Interesting--but at what cost of resources? http://www.pcworld.com/article/23086...l_wbx_h_crawl1 or Tinyurl: http://preview.tinyurl.com/3o6t33t Allen I saw that and posted the info on alt.photography there were a few skeptics there...but personally I find it rather amazing. If it comes out at an affordable price and the reviews are good... I'd consider getting one |
#3
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Anyone else see this article from PC World?
In message , philo
writes On 06/27/2011 09:37 AM, Allen wrote: Interesting--but at what cost of resources? http://www.pcworld.com/article/23086...o_promises_to_ revolutionize_photography.html#tk.nl_wbx_h_crawl 1 or Tinyurl: http://preview.tinyurl.com/3o6t33t Allen I saw that and posted the info on alt.photography there were a few skeptics there...but personally I find it rather amazing. If it comes out at an affordable price and the reviews are good... I'd consider getting one I share the suspicion that raw images are going to be memory hogs. The system would, I think, eliminate autofocus lag, at the cost of greater time spent processing the image after exposure. It seems to me that it moves the cost of the system from the glass to the sensor (and the processor). However, while the PC World article talks about refocusing the image, one of the applications described in the associated Ph.D. thesis is an extended depth of field. While I see why this might not be desired in, for example, portrait shots, it would come in handy for closeups of flowers and insects, especially if wanted for technical illustration, rather than artistic purposes. Something else that I wonder whether this can supply - one can sort of get away with photographing through fences when the fences are greatly out of focus - but could this throw away the light from the fence so you have a photograph which is if the fence wasn't there? -- Stewart Robert Hinsley |
#4
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Anyone else see this article from PC World?
Stewart Robert Hinsley wrote:
philo writes Allen wrote: Interesting--but at what cost of resources? http://www.pcworld.com/article/23086...l_wbx_h_crawl1 or Tinyurl: http://preview.tinyurl.com/3o6t33t I saw that and posted the info on alt.photography Ah, I didn't click to the article though, very interesting. there were a few skeptics there...but personally I find it rather amazing. If it comes out at an affordable price and the reviews are good... I'd consider getting one I share the suspicion that raw images are going to be memory hogs. The system would, I think, eliminate autofocus lag, at the cost of greater time spent processing the image after exposure. It seems to me that it moves the cost of the system from the glass to the sensor (and the processor). However, while the PC World article talks about refocusing the image, one of the applications described in the associated Ph.D. thesis is an extended depth of field. While I see why this might not be desired in, for example, portrait shots, it would come in handy for closeups of flowers and insects, especially if wanted for technical illustration, rather than artistic purposes. Something else that I wonder whether this can supply - one can sort of get away with photographing through fences when the fences are greatly out of focus - but could this throw away the light from the fence so you have a photograph which is if the fence wasn't there? Extended DOF may or may not be unique, you can always stop down and generally pay a price with diffraction, a longer exposure and/or more noise but the selective focus is very interesting. Perhaps the design solves the light loss associated with stopping down too but I doubt that. |
#5
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Anyone else see this article from PC World?
On 29/06/2011 18:16, Paul Furman wrote:
Stewart Robert Hinsley wrote: philo writes Allen wrote: Interesting--but at what cost of resources? http://www.pcworld.com/article/23086...l_wbx_h_crawl1 or Tinyurl: http://preview.tinyurl.com/3o6t33t I saw that and posted the info on alt.photography Ah, I didn't click to the article though, very interesting. there were a few skeptics there...but personally I find it rather amazing. If it comes out at an affordable price and the reviews are good... I'd consider getting one I share the suspicion that raw images are going to be memory hogs. The system would, I think, eliminate autofocus lag, at the cost of greater time spent processing the image after exposure. It seems to me that it moves the cost of the system from the glass to the sensor (and the processor). However, while the PC World article talks about refocusing the image, one of the applications described in the associated Ph.D. thesis is an extended depth of field. While I see why this might not be desired in, for example, portrait shots, it would come in handy for closeups of flowers and insects, especially if wanted for technical illustration, rather than artistic purposes. Something else that I wonder whether this can supply - one can sort of get away with photographing through fences when the fences are greatly out of focus - but could this throw away the light from the fence so you have a photograph which is if the fence wasn't there? Extended DOF may or may not be unique, you can always stop down and generally pay a price with diffraction, a longer exposure and/or more noise but the selective focus is very interesting. Perhaps the design solves the light loss associated with stopping down too but I doubt that. That is in a real sense exactly what it solves. The coded mask trick allows you make a pseudo "pinhole" that lets a lot more light through. The price is a lot of computation to get from the raw data to a usable image. And introduction to the basics is online at: http://www.paulcarlisle.net/old/codedaperture.html I don't know what family of MURA Lytron are using. Regards, Martin Brown |
#6
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Anyone else see this article from PC World?
Martin Brown wrote:
On 29/06/2011 18:16, Paul Furman wrote: Stewart Robert Hinsley wrote: philo writes Allen wrote: Interesting--but at what cost of resources? http://www.pcworld.com/article/23086...l_wbx_h_crawl1 or Tinyurl: http://preview.tinyurl.com/3o6t33t I saw that and posted the info on alt.photography Ah, I didn't click to the article though, very interesting. there were a few skeptics there...but personally I find it rather amazing. If it comes out at an affordable price and the reviews are good... I'd consider getting one I share the suspicion that raw images are going to be memory hogs. The system would, I think, eliminate autofocus lag, at the cost of greater time spent processing the image after exposure. It seems to me that it moves the cost of the system from the glass to the sensor (and the processor). However, while the PC World article talks about refocusing the image, one of the applications described in the associated Ph.D. thesis is an extended depth of field. While I see why this might not be desired in, for example, portrait shots, it would come in handy for closeups of flowers and insects, especially if wanted for technical illustration, rather than artistic purposes. Something else that I wonder whether this can supply - one can sort of get away with photographing through fences when the fences are greatly out of focus - but could this throw away the light from the fence so you have a photograph which is if the fence wasn't there? Extended DOF may or may not be unique, you can always stop down and generally pay a price with diffraction, a longer exposure and/or more noise but the selective focus is very interesting. Perhaps the design solves the light loss associated with stopping down too but I doubt that. That is in a real sense exactly what it solves. The coded mask trick allows you make a pseudo "pinhole" that lets a lot more light through. The price is a lot of computation to get from the raw data to a usable image. And introduction to the basics is online at: http://www.paulcarlisle.net/old/codedaperture.html I don't know what family of MURA Lytron are using. Hmm, I took a quick stab at their technical explanation, the CEO's thesis: http://www.lytro.com/renng-thesis.pdf It seems each microlens projects onto a small portion of the sensor so you get a much lower resolution image, although I dunno, maybe some of that comes back in the interpolation, I didn't read it that carefully. |
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