Thread: 'Twere My Birthday Today...

And all I got was a new Sony LCD TV.

Old n' Busted:

[img width=750 height=562]http://img.photobucket.com/albums/v646/draco7891/DSCN0039.jpg[/img]

The New Hotness:

[img width=750 height=562]http://img.photobucket.com/albums/v646/draco7891/DSCN0044_edit.jpg[/img]

And for the real geeks, the unedited second image showing some awesome cosmic ray action on the CCD:

http://img.photobucket.com/albums/v6...1/DSCN0044.jpg

I love those rogue pixels (the camera is flawless, the errors are due to BVR cosmic electromagnetic radiation striking the CCD and flipping pixel strengths).

Draco

happy birthday! and

Originally Posted by draco7891

I love those rogue pixels (the camera is flawless, the errors are due to BVR cosmic electromagnetic radiation striking the CCD and flipping pixel strengths).

Draco

uh....wtf?
lol, hope your b-day was nice.

Commissar Squeaky

Happy happy joy joy! Hope it twas a good one...

Happy birthday, I bought a near identical tv with the money i got from my birthday.

Yeah I was going to comment about the bad pixels until I read the rest of the post. How cool!

Originally Posted by Glock

uh....wtf?
lol, hope your b-day was nice.

Commissar Squeaky

I think he's referring to those little bright dots here and there along the screen of the TV.

At any rate, happy birthday you frighteningly intelligent person.

*Puts on tweed jacket*

As you know, the Sun's fusion reactions emit not just visible photons, but also many other forms of radiation in the electromagnetic spectrum. Most cosmic radiation is blocked by our atmosphere (simply by sheer abudance; the chance that a particle makes it through the atmosphere without striking an air molecule is very small), but some makes it through, UV being the most well known (gives ya sunburn!). UV is at a wavelength just beyond visible light, and beyond UV are the Xray bands.

Digital cameras operate on the principle of capturing light like a normal fim camera, but instead of photo-sensitive film, they use what is called a CCD, or charged coupled device. It is basically a light-sensitive chip that can translate a field of photon input into an image, pixel by pixel. Most consumer cameras use a single CCD, while more expensive professional cameras often use three.

To capture an image with a single CCD, the camera takes 3 pictures at once; one each in the red, green and blue spectrum to assemble both the luminance and color of the final image (In a 3-CCD camera, each chip takes one of the colors).

Often, when shooting in bright conditions, or with a sunlit window in the frame, Xrays (primarily, anyway; could also be beta particles from radioactive decay) can enter the camera along with the photons, and since a CCD is more broadly sensitive than a human eye (ie, that it can pick up energy from both the infrared range as well as into the UV/Xray bands), those errant and very lucky cosmic rays are translated as rogue pixels which appear very bright, or all one color as they react with the CCD.

Because I couldn't get a shot with the flash that wasn't ugly and refractive, I had to shoot with no flash, which meant the exposure time was much longer than normal (about 1.5 seconds, compared to a 'normal' shot of maybe 400ms), and I was shooting a very dark subject in front of a very well-lit western window in the late evening.

Thus, rogue pixels galore.

Draco

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