Sony SNC-RZ25N - Network Camera Katalog - Seite 3

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INTRODUCTION

Camera Technologies

SuperExwave™ Technology

(SSC-E470 Series/SSC-E450 Series)

During nighttime monitoring applications, camera

sensitivity is one of the most important factors in

capturing a clear image.

Sony cameras that incorporate SuperExwave technology

achieve extremely high sensitivity levels especially in the

near infrared wavelength region of the electromagnetic

spectrum. As a result, sensitivity levels in the visible

wavelength region are increased by approximately 10 %,

while the sensitivity in the near infrared region is increased

by approximately 50 % when compared to Exwave HAD

technology. Sony SuperExwave cameras employ advanced

photo-diode sensors capable of capturing a great amount

of light in the near infrared region while efficiently

converting this light to electric signals thus achieving high-

sensitivity levels.

Shooting environment: LED lights (wavelength 950 nm, irradiation

distance 1 m), Dark room

Fig.1 SuperExwave vs Exwave HAD Image Comparison

1.20

1.00

0.80

0.60

Visible

wavelength

region

0.40

0.20

0.00

300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000

Wavelength (nm)

*This chart has been simplified to show the difference in sensitivity between

SuperExwave and Exwave HAD. The values are for reference only.

Fig.2 SuperExwave vs Exwave HAD Spectral Sensitivity Comparison

SuperExwave

Exwave HAD

Near

infrared

region

DynaView™ Technology

(SSC-DC590 series/SSC-DC570 series)

Newly developed DynaView technology achieves an

incredible dynamic range that is 128 times wider than

conventional cameras. Users can capture clear images

even in extreme high-contrast lighting environments. By

activating the DynaView mode, the camera will capture

the same image twice - first with a normal shutter speed,

and then with a high shutter speed. The newly developed

LSI technology then combines the dark areas captured at

normal shutter speed with the bright areas captured at

high shutter speed to create one image.

The result is an extremely high-contrast picture that is

unattainable with a conventional camera. (See Fig. 3)

Additionally, DynaView technology allows the cameras to

achieve more powerful Back- Light Compensation (BLC).

While conventional BLC can result in over exposure when

capturing background images, DynaView reduces this to a

minimum by using a high shutter speed for the

background, which consequently provides optimum

exposure for both the subject and the background.

At normal speed shutter

DynaView

Fig.3 Dynaview Technology

At high speed shutter