Most of the current small 5MP digital cameras use 1/1.8″ sensors which areabout 7mm x 5mm. They have an area 25x smaller than 35mm film and about 9.5xsmaller than a small sensor digital SLR like the Canon EOS 10D. You might wonderwhy sensor size matters and that’s a pretty complex issue. The bottom line isthat, for a given pixel count, the larger the sensor (and hence the larger thearea of the individual pixels) the better the image quality and the lower thenoise level. For a full treatment why all this is so, see my article here on photonet titled SIZEMATTERS.
DPI stands for “dots per inch” and is a property of a printer, not a digitalimage. It’s a measure of how finely spaced the droplets of ink can be in a print.However the number is a bit misleading since it’s not always measured in the wayyou think it might be! Printer settings of 360dpi, 720dpi, 1440dpi and 2880dpiare often found. However the difference between then is subtle at best. Mostpeople probably couldn’t tell the difference and 360dpi usually looks great.Changing DPI does not change the size of the print. PPI controls that.DPI controls print quality (though as I said, over 360dpi you don’t see muchchange). Memory
Sony’s Mavica camera line debuted in the early 1980s, featuring analog image sensors that recorded onto proprietary floppy disks. Later Mavicas transitioned to digital technology and conventional HD DOS floppies, followed by models that wrote to CD-R and CD-RW media, including the 2-megapixel MVC-CD250, introduced in 2002. It’s easier to recover images from your Mavica’s discs if you understand how the camera saves its files and manages the pictures you take. Actually, the best digital camera is the one that you will enjoy and use. Not the type that you’ll just leave rotting in its box or after a few weeks of usage or so, up there in the attic.
To help understand sharpness and detailed quality, you should learn how to explain pixel pitch. Pixel pitch is referred to as dot pitch in other forms of electronics like computer monitors and LCD televisions. It is the size of the pixels in relation to the camera sensor size and is measured in millimeters. Understanding pixel pitch shows how sharp a camera’s pictures can be and is based on multiple elements. The best pixel pitch includes the greatest number of large-sized pixels on the smallest space. These sensors are completely electronic in their operation. They have various internal electronic devices to measure light intensity and a host of other duties.