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Topics - adamdoesmovies

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Technical Support / Posting CanonRumors links on Facebook/other sites
« on: June 08, 2012, 02:02:20 PM »
As a long time reader, I want to be able to share articles I read here with friends. However, when I post the link, it comes up not with a preview of the page, but with a gibberish shortened URL instead...Is there a way to link to CR articles in such a way that it will show the article?

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EOS Bodies / Eye control
« on: June 17, 2011, 06:22:01 AM »
So I've been messing around with the old Elan IIe (and the Elan7e to a lesser extent) and both had an amazing feature on them: the ability to choose focus point with eye movement alone. So far, I have found myself able to use it with very good accuracy.

My question is this - Why is this not included in any of the modern DSLR's? I understand it's more difficult to choose between 45 focus points than it is for 3, 5, or 9, but even the ability to choose zones on my 7D by eye control would make things a lot faster for crucial work such as sports. Has canon ever said anything as to if they're bringing it back, and if not, why not?

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Canon General / Canon 7D noise observations
« on: March 21, 2011, 02:16:20 PM »
I finally got my 7D, and it's an amazing camera. Upgrading from my still-pretty-amazing old 30D(inosaur). Pretty much everything that can be said about using this camera has likely been said on this forum.

One thing I haven't found anywhere online is a detailed description of the 7D (or indeed pretty much any other DSLR) in the way that noise is physically perceived by the sensor. In my obsessiveness, I spent about a half hour looking at 10x enlargements of hi-iso live-view and video. I noticed that almost all of the pixels have a specific style of unpredictability which is, well, predictable. Certain pixels only glow varying shades of blue (Partially an artifact of the 4:2:0 processing?) while others flash red and blue, or others go dark with intermittent flashes of white.

 The important thing I noticed is that the behavior of the pixels is consistent - one that flashes off-blue-white will always be in one of those three states, and won't flash red/green if it wasn't already predisposed to do so. Same for the dull blue ones, which stay in various modes of that state, or, if they have the disposition, flash red.  This seems to indicate nano-scale "flaws"  or slight differences in the way each pixel lithographed, but I'm not entirely sure. Sensor noise is caused by random electrons/charged particles striking the pixels, so the structure of each pixel might be different in such a way that some are more predisposed to being affected.

I understand that in stills, there is a fairly effective noise reduction algorithm based on a "dark frame" of this noise, but given the consistency and placement of noise activity across the sensor, shouldn't it be possible to create a more advanced noise reduction algorithm based on the fact that each pixel has its own specific, fairly predictable noise signature?

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