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Allesi is a leader in the implementation of surveillance camera systems based on IP technology (Samsung). We offer a wide choice of security cameras in both analog and IP modes. Control access to your offices with proximity readers, door readers and/or biometric systems. Add a recorder and monitor to your network to store your videos.
Different types of camera are available, and the first thing to consider is whether to use digital or analog technology. Analog systems are losing ground somewhat, but offer the great advantage of working with older, NTSC-compatible equipment (cathode ray tubes, VCRs).
Digital IP cameras are compatible with the latest technologies (LCD, LED, Plasma flat screens) and offer incomparable image quality.
The visual field angle: expressed in degrees of angle. This designates the area that a lens is able to film. The focal length of a lens determines the width of the field of view filmed by the camera. A wide-angle lens has a shorter focal length than a telephoto lens, so its field of view is wider.
Opening and exhibition: The number F defines the aperture of the lens diaphragm, and therefore the amount of light that can pass through it. The smaller the F-number, the greater the lens' ability to collect light. A small F value means you'll get a good image even if the area to be monitored is poorly lit. On the other hand, a higher F value means a greater depth of field (deeper, clearer area between foreground and background).
Sensitivity Lux: expressed in Lux, this indicates whether or not a camera is capable of filming in the dark. The lower the value, the higher the sensitivity, meaning that it will be possible to detect movement in the dark.
Night vision The infrared LEDs surrounding the lenses enable outdoor surveillance even at night. As soon as the area to be monitored begins to darken, the camera automatically switches to "night" mode and switches on the LEDs surrounding its lens. Some models can illuminate up to 30 meters. The area to be monitored switches to grayscale.
Autofocus This corresponds to focus, for sharp, precise images.
Different types of camera are available, and the first thing to consider is whether to use digital or analog technology. Analog systems are losing ground somewhat, but offer the great advantage of working with older, NTSC-compatible equipment (cathode ray tubes, VCRs).
Digital IP cameras are compatible with the latest technologies (LCD, LED, Plasma flat screens) and offer incomparable image quality.
