The new Dallmeier DF4920HD-DN/IR is a weather-proof HD network camera with automatic day-night switching and integrated infrared lighting. The camera provides real-time Full HD video (1080p/30) using the H.264 codec and supports resolutions up to 3-megapixel.
Unlike most conventional IR cameras that use many small LEDs arranged circularly around the lens, this IR camera uses three large light-emitting diodes (semi-covert 850 nm high power LEDs). The camera thus achieves a very high irradiation output (up to a distance of 25m) and homogenous illumination even in the marginal areas, the makers say. With the new motorised varifocal lens the IR camera can now be installed easier and faster, it is claimed. You can set the focal length and focus over the network. The stepping motor for the positioning of the lens system of the fast lens allows for adjustment of the focal length (zoom) and focus (including One-Push Autofocus) setting over the web browser.
The Digital Image Shift function provides for a subsequent digital fine alignment of the image section. Built into an IP66-rated weather-proof enclosure, the camera is designed the makers say for indoor and for outdoor use. The camera is operated via Power over Ethernet for cabling and commissioning.
Videonar on YouTube
Details of the Dallmeier IR camera can also be found on YouTube: In just under six minutes the video on http://youtu.be/o2IHHBQ4Pts describes the camera’s ighting concept and shows how it can be configured via a web browser. Functions such as zoom and focus adjustment, digital image shift, setting up privacy zones and optimum configuration of IR illumination are also explained in the video.
