Tuesday, November 2, 2010

Annoying Aspects of CCTV

From Lambert & Associates: "A photograph in a recent issue of that fine CCTV Image magazine, the organ of the CCTV User Group, showed a spanking new CCTV control room. The proud owners had invested in a bank of monitors often known as a video wall. Nothing unusual there, you might say to yourself. Indeed. (My thoughts on how to save money, power consumption and cooling costs in your control room by avoiding the need for a video wall will wait for another day.)

In CCTV where, disappointingly, end-users’ technical advice can come from an ex-policemen who doesn’t really know a pixel from a pixie or from a salesman who thinks “codecs” is spelled “codex” (because he once read The Da Vinci Code), we often see regular CCTV images being inappropriately stretched across widescreen monitors. Please, no.

Look at it, then think about it. Take the normal 4:3 CCTV picture and stretch it over a typical 16:9 LCD and you end up with a sideways distortion of 33%. That’s a whole 1/3!"

Click here to finish reading part 1. Click here for part 2. Click here for part 3.

Enjoy.

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