what is Exir CCTV camera!!Difference between Exir vs IR CCTV camera !!

what is Exir CCTV camera!!Difference between Exir vs IR CCTV camera !!
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EXIR vs. IR in turret security cameras: EXIR technology makes the illumination pattern rectangular and more evenly dispersed. EXIR turret security cameras can offer higher illuminant efficiency and longer night vision distance than infrared cameras. The price of this type of security cameras typically is much higher.
Infrared technology is the most popular night vision technology used in security cameras for its affordability and high quality. You can still get clear night vision images with infrared security cameras even in utter darkness.
Turret security cameras are becoming more popular than dome and bullet security cameras when used outdoors, including your doorway, backyard, front driveway, soffit, eave, etc. They don’t have the spider web attracting qualities of a bullet style, not the reflection issues of a dome type.
The easy angle adjustment also makes turret security cameras overshadow bullet and dome cameras. Unlike dome security cameras with the glass housing, the lack of dome shell makes turret cameras free from glare effects. The price of turret security cameras is much more favorable than dome and PTZ security camera types.
When compared with bullet security cameras, turret cameras are less aggressive and intrusive.ello friends
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Traditionally, CCTV has been all about dome and bullet cameras, and turret / eyeball / flat-faced dome cameras haven't been quite as commonly installed. Now however we tend to recommend Hikvision's DS-2CD2342WD-I EXIR turret camera for most applications that don't require a vandal resistant dome, such as when the camera is going be mounted out of reach.
This is due to the fact that the turret camera is what is named by Hikvision as an EXIR camera, which is to say that the camera's built-in IR LEDs are housed in a separate window to the camera lens and are rectangular-shaped, utilising Hikvision's patented EXIR technology (hence the name!).
The camera lens is in the left-hand window in the below image, and the EXIR LEDs are in the right window.
This helps to eliminate a number of inherent problems with more traditional integrated IR seen in many cameras.
No IR Reflection or Bleeding
Having the IR LEDs housed independently from the camera lens completely eliminates the chance of internal IR reflection and IR bleeding which can be a problem with dome cameras in particular. A curved, reflective glass dome cover can inevitably reflect the IR back and blind the camera which we've covered before, and an EXIR camera doesn't suffer from this, allowing Hikvision to install stronger EXIR LEDs with no risk.
Better IR Coverage
Traditionally, IR has been integrated in a circular array of many LEDs around the lens. This brought with it the common problem of a circular overexposed area in the centre of the image, with the corners being underexposed due to an uneven IR coverage. The rectangular EXIR LEDs provide a much more even coverage across the entire image, eliminating this issue.
Fewer Issues with Spiders / Insects
Spiders and other insects are typically attracted to the warmer IR LEDs which in a non-EXIR camera would often lead to them sitting in front of the camera lens. This is less of an issue with EXIR cameras, and on the DS-2CD2342WD-I there is also fewer places for spiders to anchor to (flat-faced).
You may have noticed that some of the HD-TVI and HD-IP cameras are described as having EXIR Infra-red lighting.
Conventional IR, integral to cameras, uses an array of individual LEDs which aren’t particularly focussed to the lens pattern. This tends to result in a picture which has a circular pattern of brightness with more illumination at the centre of the image.
As a result, Hikvision has developed the EXIR system which uses a lens configuration to make the illumination pattern rectangular and more evenly dispersed. The EXIR IR system is used on a range of TVI and IP cameras. A list of the cameras with EXIR is listed at the foot of this article. Compared to conventional IR cameras
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