EverFocus EZN3261 2.0 megapixel infrared network camera has proven its excellent performance after our one day simulation test.
Good Ventilation, Vandal Resistant and Waterproof Design
EverFocus EZN3261 2 megapixel infrared network camera is made of aluminum enclosure in beige with delicate coating and double-layer structure to provide heat protection and ensure good ventilation for infrared LED light.All the cables of connectors, where labeled information is provided, are collected at the back arm of this camera to protect the connections from being sabotaged and ensure outdoor IP66 capability (figure 1). This camera supports DC12V power supply and PoE as well enabling flexible power usages. This model also embeds BNC outputs for ease of on site focus adjustment through its 5 directional keys, and it features an external alarm DI/DO connector.
EverFocus EZN3261 infrared network camera is built with a TCP/IP socket without analog signal outputs, so this product has an exclusive auto-zooming feature compared to normal infrared network cameras. This feature allows the adjustments to be done through the buttons on cameras or UI software, providing great ease of on site installations and avoiding the hassles of remote zooming. EZN3261 offers a slot for massive capacity SD/SDHC memory card and bidirectional audio signal transmission capability. Most importantly, EZN3261 is a day-and-night functional camera with 12 efficient LEDs and photoresistors in front to automatically turn on the auxil LEDs (figure 1). The built-in IR lens supports 4.9-49 mm 10x optical zoom and auto-iris. Users can perform the image zooming and autofocus controls via its software interface.
1080P High Definition and Accurate Color Rendition
EverFocus EZN3261 infrared network camera adopts 1/3" CMOS sensor, which enables enhanced image resolution even in low light environments to deliver good image quality in both 16:9 and 9:16 formats. This model supports four streams and multiple formats of compression outputs. When testing with H.264 compression and 2 megapixel formats in main stream of 1080P, we can see that the 16:9 EIA resolution chart and ISO12233 chart show clearly lines around 1200 TVLs (figure 3a and 3b). These results make EverFocus EZN3261 an ideal solution for full HD surveillance. When we monitor the moving object in a dynamic scene, the target doesn't have any image smear. As this product is designed for day-and-night surveillance, users can select whether to use infrared illumination or specific light modes according to different environments. This camera can also switch automatically to monochrome mode in low light conditions to reduce the noise.When viewed with the standard 24-color rendition and gray scale charts, EZN3261 infrared ip camera shows accurate color rendition. It delivers crisper image quality and excellent noise suppression performance, making it a qualified product for high-end applications (figure 2).
Above Average Network Streaming Capability and Impressively Low Latency
EverFocus EZN3261 supports four streams of image transmission. In H.264, we set the network data rate to 8 Mbps and the data transmission throughput is from 7.9 Mbps to 8.7 Mbps in constant bit rate (CBR). This value is quite big in streaming but the overall performance of 2 megapixel at 30fps is above average. As to the image latency, EZN3261 shows impressive power with high frame rates in big streaming real-time conditions. The manufacturer's long-proven R&D efforts have made the low latency reliability come true. Its delay is surprisingly low with only 190 milliseconds. To further verify this value, we perform the test again and the result is 200 milliseconds.High Performance Auto Night Vision Switch and Infrared LED Light
EverFocus EZN3261 is designed for day-and-night surveillance; users can check to automatically or manually turn on the night vision features in Internet Explorer screens. They can also select various modes without LED lighting to meet the low light requirements or choose to use auxil 12 LEDs for a better night vision performance. For this test, we put EZN3261 camera in a camera obscura and set Day/Night mode into Auto. Once the camera obscura is in 8-10lux, we further fine-tune the illumination. During the test, we find that EverFocus EZN3261 will switch automatically from color mode to monochrome mode according to its photoresistors sensing. Meanwhile, the auxil LEDs won't cause the monochrome image to be overexposed or blurry (figure 4a and 4b). When we use Internet Explorer screens to adjust the illumination of the camera obscura to 0 lux, the images of day-and-night surveillance are reliable too. In the day mode, the images under the camera obscura test remain colorful and easy to identify the objects and colors even under 0.5-0.3 lux.Unlike other cameras of this type, it can eliminate the interferences from spotlights or surrounding LED light sources ensuring stable image quality without flickers. When we turn on the monochrome mode of EZN3261 camera, it provides crisper images with its infrared function and the images of the moving objects in the camera obscura show no smear, noise or sparkle caused from the slower electric shutter speeds. This infrared network camera delivers full HD image experience in good night vision quality of 1080P and able to meet customers' crucial night surveillance demands.
The advantages of EverFocus EZN3261 camera include the wide dynamic range (WDR) feature. When simulating the backlight scenes in harsh light environments, the image difference with or without WDR is obvious. However, its designed WDR dB value could be too high so that the noise in the background stands out making the color rendition inaccurate (figure 5a and figure 5b).
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