Over the past two years, we’ve been focused on building out our range of RF lenses to expand the creative possibilities of our R-System consumers, however, our commitment to supporting our EF lens range is unwavering. It’s true, Canon has … Continue reading →

There are two major branches of optics, physical and geometrical. Physical optics deals primarily with the nature and properties of light itself. Geometrical optics has to do with the principles that govern the image-forming properties of lenses, mirrors, and other … Continue reading →

Disadvantages of digital television Antenna Upgrade. Antennas need a strong digital signal, so you might need to upgrade, amplify or realign your TV antenna to receive a satisfactory digital signal. Antenna Alignment. Long-Range Problems. New Equipment. Energy bills. Slow Channel … Continue reading →

convex lenses. Projectors contain convex lenses. For an object placed between one and two focal lengths from the lens, the image is: inverted. magnified. Are concave lenses used in projectors? Note: We don’t use a concave lens in a projector … Continue reading →

The two most common types of lenses are concave and convex lenses, which are illustrated below in Figure 1. A common bi-convex lens is considered a positive lens because it causes light rays to converge, or concentrate, to form a … Continue reading →

Check the status of the LEDs in the IP security cameras. If it’s an infrared IP security camera, you are able to see small red lights around the lens of the security camera in the dark, when this security camera … Continue reading →

The camera’s bright spotlight activates when it senses human motion, stopping trespassers in their tracks. When used with a compatible recorder, Human Detection reduces false alerts to your Smart Device, while Facial Capture takes a snapshot of a person’s face … Continue reading →

The best night vision security camera Product Google Nest Cam IQ Outdoor Swann Bullet NVR Security Camera Starting Price $399 $99.99 Indoor/Outdoor Outdoor Both Video Quality 1080p 1080p Field of View 130° 75° Which CCTV camera is best for night … Continue reading →

In short, EF refers to the mount type for Canon lenses, while EOS is a name given by Canon to the series of bodies that used the Electro-Optical System. What does the EOS in Canon mean? EOS stands fo Electro-Optical … Continue reading →

So, the short answer for this question is yes, of course software engineering is a good career.To back up this short answer, we can look at some short details about what software engineers can expect during their career: Higher-than-usual salaries. … Continue reading →

The AF-D type Nikkor lenses have a conventional mechanical aperture ring (indicated by the arrow to the right).G-type lenses, like all D-type Nikkor lenses, transmit focus distance information to the camera for 3D Matrix TTL metering systems, including flash exposure … Continue reading →

DIRECTV DVRs can’t be used for over-the-air reception. They can’t be used for other services. If you don’t have to return them, you can strip the hard drives out but remember that they’ve been sitting in your dusty entertainment center … Continue reading →

Connect the CCTV cable(s) video lead to the DVR in each Video Input port as required. Ensure you use the connector marked “For DVR side only” Connect the CCTV cable video and power lead to the camera leads. (Marked “for … Continue reading →

How to Fool a Motion Sensor Do not move at all once you realize that you need to bypass a sensor. Look for the location(s) of any motion sensors around you. Move slowly along the walls in which the sensors … Continue reading →

Adjustable Cameras For the utmost in control and coverage, your system can include adjustable security cameras. Fitted with motor-driven actuators, these cameras can be programmed to move automatically to capture a wider field of view than fixed security system cameras. … Continue reading →