Canon Files Patent Application to Expand Sensor DR

June 11, 2010 | Zoltan Arva-Toth | General | 6 Comments |
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Canon has recently filed a patent application for a solution that would allow digital cameras to faithfully capture high-contrast scenes in a single take. Photography Bay reports that the patent application describes a process whereby different exposure times are assigned to different photosites on the sensor to ensure highlights are not blown out and shadows are not blocked up. If you are interested in the technical details, you can read the entire patent application online.

Via Photography Bay



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#1 Yousuf Akhond

Can the same technology be used for different filter effects e.g. ND Grad?

10:12 am - Saturday, June 12, 2010

#2 riccardo

actually this would be WAY better than a grad filter as it actually automatically mask the exact pixels that would go overexposed, while a grad filter makes a rather unprecise and unnatural effect!

3:13 pm - Saturday, June 12, 2010

#3 Yousuf

Thats true. Got the point. Thanks Riccardo.

3:53 pm - Saturday, June 12, 2010

#4 Claire

There was me looking for Gradient Filters for my old Canon.....best hold on ;)

4:59 pm - Saturday, June 12, 2010

#5 riccardo

Claire... this is not going into production until...ages! you better get your filters and go shoot your pics :D

5:39 pm - Saturday, June 12, 2010

#6 Yousuf

Well, you may laugh at me now but I was thinking about the idea for quite a few years! Not at pixel level like what Canon has patented but more in the line of a digital ND Grad or selective application of dark areas (masks?) as required. I wonder what took Canon (or others) so long to come up with the idea? Probably something to do with processor speed. I should have patented the idea anyway :-)

6:48 pm - Sunday, June 13, 2010