High Definition
2K and 4K IP security cameras offer the best video clarity available
The movement beyond 1080p full HD image resolution has begun. Terms such as 2k Extreme HD and 4k Ultra HD are now becoming everyday words when people speak of television screens, computer monitors, or mobile phone resolutions. But what do they mean? And what does it have to do with the future of security systems?
What makes an image 2K and 4K?
For an image to be classified as 2K Extreme HD it must have approximately 2000 horizontal pixels. Following suit, 4K Ultra HD must have approximately 4000 horizontal pixels.
8,847,360 pixels
The amount of pixels within screens has taken a giant step forward with 2K and 4K resolutions. Industry standards typically represent the 2K Extreme HD pixel ratio as 2048 x 1536 and 4K Ultra HD as 4096 x 2160.
2K and 4K surveillance cameras from Dahua
The future of security monitoring
The Lorex 2K and 4K IP cameras will leave nothing to question. With their crisp images and amazing digital zooms, you will have the best chance to capture details you need, even from a distance. With the introduction of these new security cameras, the world of security monitoring has never looked better.
Clarity
Images are incredibly crisp, with sharp definitive lines that distinctly outline every object and feature.
Digital zoom
The higher amount of pixels allows for a higher quality digital zoom so you can see further into the distance.
Color & night vision
Larger image sensors capture more light, which improves color, contrast, and low-light performance.
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4K (8mp) IP Security Camera
8mp IP cameras from Dahua are an ideal solution whether you are in the market for a new security camera or looking to upgrade. Not only will they noticeably improve the video quality of your security footage, their rich feature set will provide you with many other advantages:
PoE enabled
Easy Power-over-Ethernet installation
Night Vision
Improved recognition of objects in low light conditions
Intelligent compression
In-camera video encoding saves recording space
Wide angle lens
88° horizontal field of view provides extensive coverage
IP66 Weatherproof
Outdoor cold climate capability (-22°F / -30°C)
High resolution image sensors
A major determining factor in image quality is the camera’s image sensor. These sensors are classified by their number of megapixels (the equivalent to one million pixels). For instance, a 4-megapixel security camera has a pixel resolution of 2688 x 1520, that’s a total 4,085,760 pixels.
Since 2K is defined by having approximately 2000 horizontal pixels, the resolution can vary if you use a 3MP, 4MP or 5MP security camera. For example, a 3-megapixel aspect ratio is 2048 x 1536 (about one and half times bigger than 1080p resolution) while a 5-megapixel aspect ratio is 2560 x 1960 (about two and half times bigger than 1080p). This shows that even though both can be classified as 2K, a 5-megapixel security camera has a much higher resolution.
| Image Resolution | # of Megapixels | Pixel Ratio |
|---|---|---|
  |
1mp | HD 720P | 1280 x 720 (921,600 pixels) |
  |
2mp | Full HD 1080P | 1920 x 1080 (2,073,600 pixels) |
   |
3mp | Super HD 2K | 2048 x 1536 (3,145,728 pixels) 1.5 x 1080P |
| 4mp | Super HD 2K | 2688 x 1520 (4,085,760 pixels) 2.0 x 1080P |
|
| 5mp | Super HD 2K | 2592 x 1944 (5,038,848 pixels) 2.5 x 1080P |
|
 |
8mp* | Ultra HD 4K | 3840 x 2160 (8,294,400 pixels) 4.0 x 1080p |
