Vista QP04 series Manual de usuario descargar pdf (Pagina 9)

Professional Test

www.benchmarkmagazine.com

size, but it packs in all of the features

associated with typical Samsung cameras.

The camera is supplied with a flylead for

power and video connectivity, and the rear of

the unit also houses an eight pin socket for

firmware upgrades. A plug for this connection

is also supplied. To access the menus and to

configure the unit, you will require a coaxial-

based plug-in controller. Depending upon a

site’s needs you may not need one controller

per camera; a single unit should suffice as once

configured, you are unlikely to tweak the

camera on a regular basis!

One negative is that the marketing materials

for the camera do not make it clear that an

optional controller is required to adjust the

settings. Given that this is unusual, we did feel

that it should be highlighted. We have seen

other cameras where a simple plug-in lead is

used for set-up; perhaps Samsung should look

at a similar option.

Installation

The SCB-3020 doesn’t really differ from a

traditional camera. It’s simply a case of adding

coaxial video connectivity, power input and

you’re away. The SPC-300 optional controller

sits in the coax run, and the OSD menus are

pretty familiar if you have used a Samsung

camera before.

The only way to describe the manual is

‘basic’. That said, there isn’t much that will

need to be explained to most installers.

The camera features a number of profiles,

which are designed to allow faster set-up. It’s a

simple case of selecting the relevant profile

that delivers the best quality image for your

needs and tweaking from there. Interestingly,

given that Samsung pushes this unit as an ATM

model, the profiles include one for traffic

monitoring and one for gaming environments!

Obviously the processing engine is used across

a wide range of cameras, but there’s nothing

specific for ATMs!

Setting up the camera is straightforward,

and as is typical for Samsung units, there is

plenty of flexibility on offer. The only real

downside is the need for an additional

controller, and if this wasn’t the case then ease

of installation would be significantly boosted.

Performance

The first thing you notice is that given the size

of the lens and the camera itself, the image is

nowhere near as bad as you initially fear! Detail

is sharp, and resolution is certainly high. On

test charts our test unit

showed around 520 TV lines;

600TVL is usually quoted

nowadays when higher

density CCDs are used.

There are no issues

with clarity at all,

although if the camera

is viewing objects in

very close proximity

there is some distortion

due to the very small lens.

The degree of barreling

cannot be eliminated, but

as the field of view grows so

its effect is minimised. It

does, however, mean that

detail at the edges of the image

do lose a little clarity.

Colour fidelity is good too, and colours are

crisp and faithful. There is no obvious bias

towards either warm or cool tones, and

greyscales are accurate. That said, as light

levels fall to below 20 lux some of the lighter

tones (10 and 20 per cent greys) fade into one.

Given the size of the lens and the proposed

usage, it’s not a major issue.

Our test camera did have a few dead pixels

which appeared as white spots.These were

only obvious with certain scenes. One was on

the edge of the image, but two were fairly

central.

As light levels fall, so the colours start to

fade, and at around 15 lux they begin to look a

little washed out. However, you would still be

able to identify specific colours, but this

changes at around 3 lux, after which noise

starts to creep in. You can adjust the switching

point in terms of brightness level and dwell

time for both colour-to-mono and mono-to-

colour switching.

Verdict

The SCB-3020 performs above typical

expectations for such a small unit. That said,

there are compromises, not least the lens

performance and the need for an optional

controller to configure the camera. However,

the compromises are - if clear before

specification - not significant enough to make

the camera one to forget if size is vital.

Be aware of the negatives, and the

positives will be enough in certain applications.

It is, after all, a niche product.

We’ll let you know if Samsung develops a

better control option!

Samsung_pp08-09_000_Benchmark_nov10 13/04/2012 11:15 Page 3

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