Digital Cameras

[Derjoh]

What is a Pixel and what relationship is it to resolution

[TheHitMaker]

A pixel is a coloured dot that goes to make up a picture. The more pixels you have in an image, the clearer the image is.

[AndyAvery]

A typical TV, Computer or any other screen is made of of many dots. A typical computer screen has 1024 dots across and 768 down so this produces a massive matrix of about 787000 dots or pixels. A TV screen is less at around 800x600 and a digital camera considerably more with many at 3million pixels. A printer quotes this in DPI or dots per inch, if you have a printer that can print 1024dpi a camera with a resolution of 1024x768 would be able to fit all the information into 1 inch across (and a bit less down), any bigger than that and it has to start adding extra information which after a bit is detectable in the form of being 'grainy' or noticable jagged edges.

[roblove1]

A pixel is a picture element - a dot in layman's terms. The more dots to the square inch the better the quality (resolution) of the picture.

[martinjr]

To settle an argument can anyone tell me if the quality of ordinary sized (standard photo) is improved by having a camera with max megapixels. In other words, will I really get a noticibly better picture if I use a camera with 7.2 megapixels rather than 6 mp? I understood all along that this really only comes into play when enlarging photos or printing vary large photos?