The physical resolution at which a device can capture an image. The term is used most frequently in reference to optical scanners and digital cameras. In contrast, the interpolated resolution indicates the resolution that the device can yield through interpolation -- the process of generating intermediate values based on known values. For example, most scanners offer an optical resolution of 300 dpi, but an interpolated resolution of up to 4,800 dpi. This means that the scanner can actually capture 90,000 pixels per square inch. Then, based on the values of these pixels, it can add 15 additional pixels in-between each pair of known values to yield a higher resolution.
Coastal Video Security
416.30Day/Night High Resolution Color Zoom Dome, 22X optical, 10X Digital, Dual Voltage
DinoDirect
146.691/4 inch SONY SUPER HAD Chip, 540TV Lines, 0.01Lux/F1.6 Minimum Illumination, Digital 270X (27X Optical Zoom, 10X Digital Zoom) Zoom, CCTV Security Wi...
eSpyMall.com
229.001/4" Ex-View HAD CCD Low Power Consumption 30x Optical Zoom Multimode Focus High Sensitivity 0.01lux High Resolution more than 480TVL With Sony Ex-Vie...
DinoDirect
146.59Brand New 1/4 inch SONY SUPER HAD CCD Chip, 540TVL,IR Cut Function, High Speed Focus, 0.01Lux/F 1.6 Minimum Illumination, Digital 220X (22X Optical Zo...
