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Comparison Ginzzu HK-420W vs Ginzzu HK-421W

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Ginzzu HK-420W
Ginzzu HK-421W
Ginzzu HK-420WGinzzu HK-421W
Outdated ProductExpecting restock
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Recorder
digital
digital
Camera typedirectionaldirectional
Connectionwirelesswireless
Video channels44
Number of drives spaces11
Max. capacity6 TB6 TB
Pointed cameras
Pointed cameras22
Martix typeCMOSCMOS
Matrix size1/4"1/2.9"
Number of megapixels1 MP2 MP
Focal length3.6 mm3.6 mm
Horizontal viewing angle62 °74 °
Illumination range30 m30 m
Camera control
Mobile app
Connection connectors
LAN (RJ-45)11
USB11
HDMI11
VGA11
Video recording
Recording resolution1920x1080 px1920x1080 px
Video compression formatH.264H.264
Added to E-Catalognovember 2017october 2017

Matrix size

The physical size of the sensor in the pointed cameras is diagonally, in inches (fractions of an inch).

The larger the sensor, the less prone it is to noise, the better image quality it can provide, and the better it is suited to low light conditions. This is due to the fact that each individual pixel gets more light, because. on a large matrix and individual dots are larger. On the other hand, large matrices are more expensive.

Number of megapixels

Sensor resolution of pointed cameras in megapixels (millions of pixels).

Higher resolution allows you to get a more detailed "picture". However, increasing the number of megapixels without increasing the sensor size can result in poor overall image quality and noise, especially in low light. Therefore, in itself, the high resolution of the matrix does not guarantee high quality shooting.

Horizontal viewing angle

The viewing angle of the directional cameras supplied as standard is horizontal.

Wide viewing angles allow you to cover a large area; this is especially important given that directional cameras are often made stationary. On the other hand, all other things being equal, a larger viewing angle will mean a lower degree of magnification - objects will look smaller, detail will be worse. Therefore, when choosing according to this parameter, you should proceed from what is more important - a wide field of view or “range”.
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