Written by: Digital Photography
The word pixel was created from the two words "picture element". From that they abbreviated taking the first few letters from "picture element" and it slowly became pixel.
Some of the more expensive cameras lets you to extend your exposure time even for few seconds (Sony 505V up to 8 sec).
That's cool, but when you actually try it, your image will be .... full of stars! ...
Similar to an array of buckets collecting rain water, digital sensors consist of an array of "pixels" collecting photons, the minute energy packets of which light consists.
"Pixels per inch" (PPI) is the more straightforward of the two terms. It describes just that: how many pixels an image contains per inch of distance (horizontally or vertically).
Choosing the number of megapixels a camera takes will determine overall cost and the size of the prints produced from the images. A megapixel is equal to 1 million pixels, the computer elements used to produce a digital image.
Techniques Glossary CCD pixels
The total number of pixels on a CCD array.
Megapixels: Calculating the True cost of Resolution
Nothing excites camera buyers more than leaps in resolution. Like it or not, the eye-catching and revenue generating headlines are about mega-pixels.
Megapixels - An Explanation of Megapixels and How They Affect Photos
Camera manufacturers are fond of advertising cameras by the number of megapixels they have. But what exactly is a megapixel and how does it affect photos?
PPI (Pixels per inch)
An indication of resolution for digital pictures taken by a camera or scanned in.
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10 megapixels and up: The more advanced cameras tend to have image resolutions of 5 to 8 megapixels. Newer Digital SLRs can go up to 24 megapixels and you'd also expect their prices to go up too.
Pixels Per Inch
Normally you don't have to change the number of pixel's in an image to change the size of a printout. That task is handled by the software program you use to print the image.
Hot pixels are individual pixels which look much brighter than they should. They are also called sparkles.
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More pixels, more problems. It's true that high megapixel cameras afford photographers the ability to capture huge amounts of detail and resolution, but they also carry with them some problems that their predecessors might not.
If you only enjoy your photos on your computer screen, or uploading to a photo website to share with friends, you really only need a 1 megapixel camera.
A high MegaPixel count comes in handy when you want to crop pictures, and when you want to make enlargements.
How many megapixels do you need? First, determine how big you want to print your picture. Next multiply the number of inches by the desired ppi to calculate the total number of pixels needed.
Megabytes, Megapixels, JPEG Compression, and File Size Confusion
Isn't 100K a really small size for a photo for Your Best Shot? We explain
JPEG compression, from camera to computer monitor.
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It's Not Just Megapixels
Image quality in a digital camera is affected by much more than how many pixels fit its sensor
By Rob Sheppard ...
Open a file from such a cheap camera in Photoshop and upsample it to 6 megapixels so it will be the same size as one of our supposedly "good" images. What will our upsampled file look like?
When comparing digital cameras and their resolutions, it pays to be aware of the effective number of pixels, as often the total number of CCD pixels is quoted as an advertising ploy.
The size of a digital camera's sensor depicts the number of pixels that can be captured when it records the image. This is represented as "MegaPixel" or Millions of Pixels.
A digital photo is built from a number of pixels (pixel is the short name for picture element). Pixels are small colored squares which together forms a grid pattern resulting in the final picture.
Pixels per centimeter (ppcm), Pixels per inch (PPI) or pixel density is a measurement of the resolution of devices in various contexts: typically computer displays, image scanners, and digital camera image sensors.
A pixel is a contraction if the term PIcture ELement. Digital images are made up of small squares, just like a tile mosaic on your kitchen or bathroom wall.
The individual picture elements that make up a digital display. The more pixels, the greater the detail and sharpness of the display or the image.
Pixels mean quality for a digital photo frame
The ideal digital photo frame would display your images as clearly as a printed photograph. As this is nearly impossible, we recommend looking for the greatest number of pixels you can buy.
Pixels. The small picture elements that make up a digital photograph.
Port. An electrical connection on the computer into which a cable can be plugged so the computer can communicate with another device such as a printer or modem.
Pixels per inch (PPI)
A measure of how much detail you see in your images.
Pixels: Short for picture elements, the tilelike bits of color and tone that form a digital image.
Effective pixels: Approx. 18.0 megapixels
4.3 µm square ...
apps do not remove the need for design. this article reduces design to pretty color and layout or the candy shell of a site or a thing. Web design.UX design.UCD design ... starts at the inception of the solution.
Pixels per inch (ppi). The number of pixels that can be displayed per inch, usually used to refer to pixel resolution from a scanned image or on a monitor.
See also: Image, Pixel, Photograph, Digital, Camera