A Guide to AHD Cameras
AHD cameras offer the benefit of allowing drivers to view video transmission live and improve fleet management. They can also connect to an HDMI monitor without the need for a DVR, reducing costs and making installation easier.
They also transmit HD video at up to 500 meters over traditional 75-3 coaxial cable, and they’re compatible with D1/960H products. Unlike IP network cameras, they don’t require bandwidth considerations or cause latency or network collisions.
High Definition
High definition cameras produce crisp, clear images. They are typically ahd cameras used for security surveillance, industrial applications and remote monitoring.
Higher resolutions offer the ability to zoom in on an image without loss of quality. This allows for easier identification of objects and license plate numbers, for example.
HD cameras also have the ability to capture a wider range of light in high contrast environments. This is known as high dynamic range (HDR). Using HDR technology, you can see more of the details in the darkest and brightest areas of the image or video.
Another cool feature of some HD cameras is xvYCC, which claims to deliver up to 1.8 times more accurate colors than standard color. This is a great feature to have for applications such as trolley & checkout systems, robotics and remote patient monitoring. HD cameras with xvYCC support also have the capability to record video in full 1080p. This can help save storage space and makes for smoother playback.
Wide Dynamic Range
Wide Dynamic Range is a technology that helps cameras and sound gadgets grab an extensive range of light and tone levels – it’s super important when dealing with scenes or recordings that have a large contrast between extremely bright and dark areas. Cameras with larger sensor sizes and more megapixels tend to have better dynamic range – but this isn’t always the case.
WDR uses a special processor that can take a dark image and a light image in quick succession, then merge them to produce one picture with an optimal exposure. This means that you can get a high-quality image or video even in challenging situations like a parking lot with lots of headlights or a room filled with sunlight and a dark ceiling.
This method works differently than HDR or Digital Wide Dynamic Range (DWDR), which are software-based methods that help lighten dark images and reduce brightness on light ones. Unlike these options, which can cause blur or artifacts when working with moving objects, true WDR uses sensor-based algorithms to automatically capture two readouts in quick succession and then combines them to create a single image that is as close to what the human eye sees.
IR Night Vision
A great feature for any security camera, night vision lets you monitor areas without having to add extra lights or risk attracting attention to your property. It works by emitting invisible infrared light that can illuminate your premises and make it easier to identify people or objects in the dark.
Infrared imaging cameras are also available as outdoor models for use in areas that may be difficult to reach or otherwise difficult to light with traditional lighting. These can be used for places like entrances, driveways or front and back yards.
All living things produce infrared radiation, and the IR in a night vision camera reflects this energy, making it possible to see through darkness. Unlike a flashlight, this infrared illumination doesn’t create glare. As electrons leave the image intensifier tube they strike a screen of green phosphors, and this gives you an enhanced picture in the dark. Most analog night vision cameras only show black and white images as this is the easiest for our eyes to process in the dark.
Wide Angle Lenses
Wide-angle lenses are a must-have for photographers who want to capture stunning vistas and show their subjects in a larger, more impressive context. They can also distort and warp the image in intriguing, abstract ways. They come in a range of focal lengths, from medium wide angles that offer a slightly wider field of view than normal to extreme wide angles that are very distortion-prone and can make straight lines appear to converge.
The simplest wide-angle lenses are called rectilinear, and they display very little optical distortion. Curvilinear lenses, on the other hand, are able to produce noticeable distortion, and the most recognizable type of this is the fisheye lens, which can cause objects close to the camera to bulge or bloat in an unnatural way.
It is important to be conscious of how a wide-angle lens can distort your subject and use the lens sparingly. For example, if you take a portrait with a wide-angle lens, the subject’s features will look stretched and distorted, which is not particularly flattering. Getting closer and having a well defined, clear subject will help you to avoid this.
Mounting Options
There are many options available for mounting a hd camera in your truck or vehicle. A common choice is to mount the camera on a side-view mirror, which allows you to capture images of the truck’s blind spots in both day and night driving conditions. The camera can also be mounted in security camera supplier other locations within the truck such as under a hood or on the top of the box.
AHD cameras are the simplest way to upgrade your current analog CCTV system to HD. AHD uses existing coaxial cable and offers the same wiring requirements as 960H, which means you can easily convert your old analog system to HD by simply replacing the camera and DVR.
In addition, AHD supports a higher resolution of up to 4mp over the same coaxial cable than other HD-over-coaxial technologies like CVI and TVI. This provides better clarity of the video feed and can be viewed remotely on mobile devices like smartphones and tablets. It is also a closed technology that prevents interference from other external systems. The AHD technology also provides longer video transmission distances than traditional analog CCTV systems.
