Vista QP04 series Manual de usuario descargar pdf (Pagina 7)

WDR Cameras

case of turning features up, as balancing the

processing. Sometimes you enhance the image

by turning things down. It does mean a few

more minutes optimising the camera, but the

results are worthwhile.

The SCD-3080 delivers a credible level of

brightness compensation, with high levels of

detail and consistent colour accuracy

throughout the viewed scene. There are no

signs of artefacts or image degradation on the

edges between brighter and darker areas, and

detail isn’t affected by varying light levels.

The camera includes highlight

compensation, which masks very bright light

sources, and we did wonder whether this

might affect the darkness compensation

element of WDR performance. However, it

doesn’t; in WDR mode the camera copes very

well, even when bright lights are introduced.

Low light performance is very good, and

whilst 0.3 lux is obviously optimistic, with

processing switched off the camera holds a 1

volt peak-to-peak signal until just under 2 lux,

which is very good. Although the camera

features external switching, which we’d

recommend, the auto switching occurs at

around 3 lux, before noise becomes an issue.

Verdict

Both the Xeno and CBC cameras are based on

the Pixim Seawolf chipset, and they do deliver

an impressive level of performance given that

they are very much low cost options.

Genie CCTV’s VRD83TSPX handles both

brightness and darkness compensation in its

stride, and the lens is good quality too. The

Seawolf chipset is noisy in low light, and a

higher switching point would be good.

Honeywell’s HD4USX gets around Seawolf’s

noisy low light performance by giving a decent

level of adjustability for switching.

For a network camera, the Pelco IM10LW10

does impress; however, for pure WDR

performance it doesn’t quite match some of

the other cameras.

Samsung’s SCD-3080 proves that WDR can

be addressed without the Pixim chipset. It

matches the performance of the Seawolf

models, and provides decent low light

performance as well. If you’re looking for a

camera that performs well in low light and with

harsh illumination, it’s hard to beat. It also

doesn’t suffer from noise: a weakness with the

Pixim chipset!

The CVP9324WDR from Videcon is another

Pixim Seawolf-equipped camera. The camera’s

trump card has to be dealing with bright

elements such as car headlights.

Finally, the Vista VFDAS4V9DN-WDR offers

above average darkness compensation, but

has a slightly faded look when compensating

for brighter areas in the image.

Pelco Samsung Videcon Vista Xeno

IM10LW10 SCD-3080 CVP9324WDR VFDAS4V9DN XD4VPIX

78% 81%` 81% 80% 75%

60% 80% 80% 80% 80%

82% 85% 85% 83% 85%

80% 85% 86% 87% 84%

75% 83% 83% 82% 81%

7

www.benchmarkmagazine.com

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