![]() Twice as much resolution in a 1080 HD cameras means twice as much detail or field of view compared to a 720 HD camera.ĭefinition 3: Resolution can be the level of detail with which an image can be reproduced or recorded. Table 1: Number of pixels for different megapixel camera formats. Megapixels Total number of pixels Vertical pixels Horizontal pixels Table 1 below shows examples of typical megapixel camera resolutions. With megapixel cameras, the resolution is generally the total number of pixels, divided by 1,000,000, and rounded off. The number of TV lines in the image can be 320, 480, 570, etc.ĭefinition 2: Resolution can be expressed as the total number of pixels. For analog cameras this is the usual definition. The greater the number of lines, the greater detail or larger field of view can be recorded with the camera. I’ll list only the definitions relevant to the video surveillance industry here.ĭefinition 1: Resolution can be expressed as the number of TV lines or pixels of the image sensor used to record an image. Resolution has many definitions no one definition is correct for all situations. Rectilinear lenses such as those using Theia Technologies’ Linear Optical Technology™ don’t exhibit barrel distortion and thus maintain image resolution out to the edge of the image. Greater than about 90? most lenses start to show curved, barrel distorted images that compress the image at the edges. The shorter the lens focal length, the wider the field of view. The detail in an image is determined by resolution.
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