Mega Pixel

Mega Pixel

Much Mega Pixels Is it just a trick, right?

Remember that the term "halftone"? A few years ago, newspapers all photos published in mid-tones, and if you looked very closely, you could see all the dots that make up the image.

The printing process that uses could not print a smooth gradation from black to white as a photograph does. So halftone process used to make the image with small dots. Each point could be a change from white to black. The dots on the dark side of the image and black were the points that made up the lighest part of the image had no ink at all.

Magazines have pictures much better than newspapers, because they use much smaller, and therefore many more points. They also used different processes print, ink and tissue.

Digital Cameras have the same limitation as the presses of newspapers – which can not record a smooth gradation color or tone because the camera sensor is also made up of dots called pixels. "

"Pixel" is short for "Picture element." However, many pixels digital cameras have more than one periodical press has points that the human eye can not normally see individual pixels when printed or displayed on a computer screen. A mega pixel is a million pixels.

So think of a single pixel like one of those points. The more the better … sort of! Having a camera with a gazillion mega pixels can be like having a car with 800 horsepower in Los Angeles traffic.

And a 800 HP engine uses a large amount of gas, the cameras that produce 12 million pixels to create very large files. Too big to mail mail without first resizing. They also take much longer to download the camera and fill your hard drive as a fire hose a bathtub full.

If you want to take pictures and email them to Grandma, or put them on your website, or print for the family album of 3 Mega pixel camera will do fine. Agree, 3 Mega pixel is enough, so why pay more for anyone else?

Suppose you take a photo with your 3-megapixel camera of its basketball stars make the winning shot.

Unless you are very close to the action, or if you a telephoto lens face, your hero will only fill a small portion of the whole picture because your photo is contain about one third of all the sports arena.

So now you have a great picture of his hero … and the other players, and the 500 people in the stands! No problem because the camera comes with software to enable crop the image and expand its star so that he or she will fill most of the final image.

With this software you're really trying to get a plane short without a telephoto lens. This is when you want LOTS of pixels! And here is why.

The image of his hero was composed of, for example 100,000 of its 3 million pixels in the original photo. Now, as it cuts through most of all pixels that are not their hero, who is asking the 100,000 pixels to fill the space previously occupied by 3 million pixels on the final print will remain, for example, 4 x 6 inches.

The software of its reality preform the necessary magic! Only now it still has 100,000 pixels, they just have a lot of space between them.

The software knows is wrong, As calculated (guess!) What color dots belong to the empty spaces and gives you enough pixels to make any size picture you want.

However, only 100,000 are "real" pixels that the camera recorded. When printing includes too many "guess" pixels, gives a very poor expansion a reality bad impression, because the printers need all the "real" pixels that can be obtained. Printers are much more demanding than a computer screen.

That's why a photograph can look great on screen but be as bad when printed to be just throwing it away.

The moral of this story is that if you go to enlarge a small portion of the image, or if you plan on expanding the original picture (especially for printing) you really want a camera that produces more pixels than you can afford. If not, you can simply ignore the race pixel camera manufacturers and concentrate on finding one with other features that are important to you.

About the Author

Al Stewart has been a camera enthusiast for 5 decades. See how he uses his love of photography to create acrylic photo sculptures and other gift items at his web site: He hand crafts photo ornaments, magnets, cake toppers, statuettes, etc. Check out his site, it’s worth seeing!

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