Greg Hertfelder wrote on Fri, 15 September 2006 01:38 |
My observation has been that CCTV cameras work fine for mounting on a ceiling but settings like iris level and focus can be difficult to access and adjust. I suspect that a CCTV camera & zoom lens would cost as much a new pro or semi-pro DV camcorder. Even though you may never put a DV tape in the transport, your dollar will go farther by purchasing a DV camcorder. You do not want a consumer camcorder, as the power often shuts down as a battery-preservation prevention. |
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Cabling from a CCTV camera is usually limited to composite, which will add a lot of noise to the image that will be visible on the large screen. It would be better if the output of the camera is analog component (Y/B/R) or s-video (Y/C) for the cleanest transmission. |
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You could also consider purchasing a used pro (broadcast) or semi-pro (professional) camera. Google "used broadcast equipment". |
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Any noise the cabling adds would be added to any signal as all these would use professional coax for runs of any length. The advantages of composite > S-Video > component is in how they process the video signal at the camera and the resulting issues with the signal coming out of the camera. Keep in mind that each of these provides a potential increase in the image quality there is also a related increase in the cost of cabling, DAs, etc |
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Clarification: My use of the term "noise" was simplification of video anomalies such as "chroma crawl" (inherent in composite circuits and avoided with use of Y/C and component video circuitry), and color space error (avoided by using component circuitry.) I was simplifying for purposes of brevity in the pure sense of signal-vs.-noise. Are we going to start quoting and picking apart ad nauseum? Let's not... |
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Brad, I would be interested to hear your perspective of price of a 3-chip CCTV-camera-plus-zoom-lens versus an off-the-shelf pro or semi-pro DV camcorder that has the equivalent size CCD and zoom lens specs (all new components, of course). While pricing for DV camcorders seems readily accessible, CCTV camera pricing seams a little more guarded by contractors and dealers. |