автоматски фокус

автоматски фокус

Available in cameras equipped with motorized focus, this feature provides automatic adjustment of the focus. AF operates by varying the focus to maximize the high frequency content of the central area of the picture by reference to high luminance and strong contrast elements. In some cameras, AF can be set to High or Low sensitivity modes. AF mode is not recommended for continuous 24-hour operation. See also One-push AF, Interval AF, Zoom triggered AF.

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Vārdšķira: noun
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Nozare/domēns: Consumer electronics
Category: Video camera
Company: Sony
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рамка

Consumer electronics; Video camera

One complete TV picture consisting of two sequential interlaced scanned fields. NTSC/EIA has 30 frames of 525 lines per second. PAL/CCIR has 25 frames of 625 lines per second.

гама

Consumer electronics; Video camera

Correction law introduced in the camera output signal to compensate for the non-linearity of the CRT (Cathode Ray Tube) in video monitors. A typical gamma value is 0.45, which ...

хоризонтална резолуција

Consumer electronics; Video camera

Number of equally spaced vertical black-to-white or white-to-black transitions that the camera is able to reproduce, divided by the aspect ratio (usually 4:3) to make a comparison ...

долгорочна интеграција

Consumer electronics; Video camera

Special camera mode similar to the ‘B’ setting of a photographic camera shutter. The CCD integrates over a long (userdefined) period, providing very high sensitivity. Object must ...

минимум осветлување

Consumer electronics; Video camera

Minimum light level needed to achieve a 50% or 100% video output level when the camera is at maximum gain and the lens iris fully open. Can be computed from the nominal ...