Last week, we took a look at some Security Camera Terminology. Knowing what some of these terms mean can help anyone who is looking to buy a surveillance system for their home or business find exactly what they're looking for. Unfortunately, the language of security cameras goes beyond those twenty words. Since so many people found our first list of security camera terms very helpful, we've decided to follow up with a second list of even more words and definitions.
1. AC Adaptor - The power supply to your camera. The AC adaptor converts AC power to DC power and should come along with your camera.
2. Alarm Input - Some security cameras will begin recording when activated by a sensor or alarm.
3. Angle of View - The angle of view is the range in degrees that you can focus a security camera without causing the image to become distorted.
4. Aperture - The opening of the lens that controls the amount of of light that goes into the camera is called the aperture.
5. Armor Dome Camera - An armor dome camera has a high-impact dome casing around it, in an effort to prevent vandalism. The dome is made of reinforced polycarbonate.
6. Backlight Compensation - BLC is the ability of the camera to compensate when the background light of the subject being filmed is obscured by blooming or silhouetting.
7. CCD - CCD stands for Charge-Coupled Device. Every camera either has a CCD or CMOS chip. CCD chips produce a higher quality image.
8. Compression - This is when you take an incoming signal or image and restructure the data so that it uses less resources for transmission and storage.
9. Duplex - A duplex allows you to transfer data in and out of the recorder at the same time. For example, a duplex DVR can capture and record images while displaying another image.
10. Focal Length - If you want to know the strength of your lens, check the focal length. A longer focal length provides a narrower angle of view, a shorter focal length means a wider angle of view.
11. Iris - The iris is located on the camera lens and it controls how much light is let into the camera.
12. Low Light - This refers to normal darkness or dim lighting.
13. Lux - Lux is the amount of light a camera needs to capture a good image. For example, if you're using an infrared camera, you have a very low lux.
14. Micro Camera - This is a very small camera that is often used as a hidden camera when you don't want people to know they are being filmed.
15. Motion Detection - Some cameras only begin recording when an image moves or changes and sets them off. This can save hard drive space and is great in areas where there is not a lot of traffic and you are only looking for suspicious movement.
16. Mounting Bracket - There are many different types of mounting brackets. They are used to install cameras on the wall or ceiling.
17. Pin-Hole Camera - As you can imagine, a pin-hole camera has a very small lens with a very small hole. They require more lighting than a normal camera but are great for covert operations.
18. POE - POE stands for power over ethernet. This is an adaptor that allows you to transmit power to a security camera through an ethernet cable.
19. Real-Time Recording - 30 frames per second is the standard for real-time recording. This means the image looks just like real-time with no hesitation or jerkiness in the video.
20. Video Gain - This is also called amplification and basically means an increase in video signal power by an amplifier.
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