Choosing the right CCTV brand and technology can be challenging, given the variety of options and unique features available in the market. However, when it comes to WDR cameras, you can categorize them into two types, making it easier to select the right product for your needs.
True WDR
- Features two image sensors
- Includes a digital signal processor
- Takes two pictures at different speeds (low and high speeds)
- Combines both images to create a balanced image
- Creates sharper images compared to digital WDR
- More expensive and requires more data
Digital WDR
- Uses software and algorithms to adjust each pixel in each frame.
- Adjusts video footage in near realtime
- Heavily relies on DSP chip
- More affordable than true WDR
- Granier images compared to true WDR
As one of the most common features in security cameras, it’s challenging to find a security camera without WDR technology. However, the industry consensus is that true WDR is superior to digital WDR. The former technology uses additional sensors that capture two images at different speeds or light levels before combining the best aspects of both images, producing superior video footage.
On the other hand, digital WDR relies mainly on the digital signal processor (DSP) chip and software to enhance the camera’s performance. Digital WDR is similar to HDR technology used in smartphones to improve picture quality. While both WDR technologies rely on the DSP chip, true WDR features additional hardware built into the security camera to enhance its performance.
Ultimately, the comparison between true and digital WDR is similar to motorized zoom versus digital zoom technology. True WDR comes with additional technology built into the security camera, while digital WDR’s focus is on added software or programming designed to enhance the base design of the security camera.
Read also: What Is Wide Dynamic Range (WDR) Security Cameras