Question about Panasonic Lumix DMC-TZ3 Digital Camera
Picture resolution is the total number of pixels in your picture (those little colored dots when you look really really close). It's expressed in megapixels and is simply the product of the number of pixels in the width of the picture times the number of pixels in the length. For example, a 7.1 MP camera takes images with a resolution of 3072 pixels width by 2304 pixels height ( 7.1MP = 3072 x 2304).
Pixels/inch refers to the resolution of your picture on some external viewing device (printer, computer monitor, etc...). It has nothing to do with the settings on your camera. It's equal to the number of pixels in the picture divided by the width of the displayed picture on the device. For example, an 8 x 10" printed picture has a width of 10 inches. If I wanted to take full advantage of my 7.1 MP picture by printing it as an 8x10, then I should look for a printer capable of printing 707,789 pixels/inch. Now I'm pretty sure there's no printer currently capable of this feat.
The example above shows that the rush for more megapixels is not necessarily where consumers or camera manufacturers should be focusing their attention. Most people really only need something around the 3MP range for printouts or display on their monitor screens.
Posted on Feb 10, 2008
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Posted on Jan 02, 2017
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