| | or "Another post inspired by an Italian Aussie's Comment..."
In response to several of you who had messaged regarding that last post and were wondering: "Why isn't there a picture of you & ol'Stoney together? " While it would indeed seem a bit extreme to go all that way for such a brief post, I can assure my valued readers that it did actually take place. Despite being broadcast on the "RBS" Network, the incidents reported are factual, and the explaination for the "missing photo" is a highly technical, yet simple one. ...well two actually. First- let's talk about how the camera itself - digital in this case- captures an image: When you take a picture the shutter opens briefly and each pixel on the image sensor records the brightness of the light that falls on it by accumulating an electrical charge. The more light that hits a pixel, the higher the charge it records. ( key point there) Pixels capturing light from highlights in the scene will have high charges. Those capturing light from shadows will have low charges. After the shutter closes to end the exposure, the charge from each pixel is measured and converted into a digital number. ( another important point)This series of numbers is then used to reconstruct the image by setting the color and brightness of matching pixels on the screen or printed page. OK, got that ? great. Keep in mind now, that all that light and 'brightness' as described above is "reflected light"... Now we know that computers can store and calculate massive amounts of data/numbers, right ? so this shouldn't be a problem. So as long as those two parameters above do not exceed the upper limits of the Charged Coupled Device (CCD) sensor in the digital camera, you have your image. Second- Let's talk subject matter. Need I Say More ? My camera is due back from the repair shop next week. . |
| | Posted 5/13/2009 8:51 PM - 53 Views - 22 eProps - 23 comments
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