It is important to know that while PPM defines the number of pixels of detail that a camera can deliver at a given distance, it does not necessarily define the amount of sharpness or contrast in that image, as those aspects will also depend on the quality of the lens, the distance to the subject and the atmospheric conditions between the subject and the camera. For example, our 2075mm lens on a 2MP 1/2.8" sensor will give 286ppm of detail at 2.5km, 89ppm of detail at 8km, or 16.2ppm at 44km. Note that a PPM value must always be tied to a distance. A higher PPM value means that the image has more detail capacity. The PPM value defines the number of points or divisions for each meter of the subject that the camera is imaging. Pixels Per Meter is a measurement used to define the amount of potential image detail that a camera offers at a given distance.ĭigital images are divided into grids of pixels or blocks, each one containing the color for that specific point in the image.
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