Security Cameras Features - Vield of View

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wide angle security cameras

DESIGNED FOR YOU TO FOCUS ON WHAT MATTERS MOST

One of the most important considerations when choosing wide angle security cameras for your home or business is know how much area you need to monitor. Each scenario is unique, and therefore, when searching for the best wide angle security camera, its essential to take into account the field of view (angle of vision) of the security cameras. The field of view, also called the viewing angle, of a security camera is the area that the camera can see. The focal length, or the size of the security camera lens, is the main factor that determines the Field of View. Camera with a larger size lens, produce a narrower Field of View and the shorter viewing distance. On the contrary, camera with a smaller size lens, also known as a wide angle security cameras, produce a wider Field of View and longer viewing distance.


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The field of view is affected by the lens size, the CMOS image sensor size and the distance the wide angle security cameras is from the scene. The size of the camera lens will affect the viewing angle of what the camera sees. The different sizes of the security camera image sensor chip also affect the viewing angle – the smaller the chip size the narrower the angle of view. The distance from where the wide angle security cameras is mounted from the object also affects what image is recorded.

The type and size of lens that your CCTV camera has plays a main role in determining what image is captured by the camera. That’s why choosing the correct lenses for your security cameras is a very important aspect of designing an effective video surveillance system.

wide angle security camera : Lens Type

A fixed lens is one where the camera’s focal length is permanently set and cannot be adjusted by the user. This means that a fixed lens doesn’t let you adjust the focal length so the field of view is permanently set, so it is important to select the correct field of view (wide-angle or narrow-angle) for your application. Fixed lens for security cameras are generally less expensive so can be a good option if the layout of an area is not likely to change (such as a room in a house).

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These lenses are generally found as 2.8mm, 3.6mm, 6mm, 8mm, 12mm, 16mm etc. As shown on the graph, the larger the size of the lens, the more narrow and zoomed in the field of view is.

Varifocal Lens

A varifocal lens allows users to manually adjust the camera focal length, angle of view and level of zoom. The general size of the lenses are: 2.8-12mm, 3.5-8mm, 6-60, and 5-100mm lens. The larger the aperture number, the more zoomed in the image will appear and the greater detail that can be captured, but you will get less of a field of view, so the image will be narrower. The smaller the aperture number, the wider the view but less detail will be captured. If you need precise adjustment to the angle and field of view for your application, a varifocal lens for security cameras is recommended so that you can adjust the lens to the exact view that you need. Security cameras with varifocal lenses are typically more expensive than the equivalent fixed lens model, but they allow for greater flexibility to optimize the camera picture for your specific needs. Wide angle security cameras, which have lenses that are less than 2.8 or more that open more than 90 degrees, the fish eye security cameras usually places it in the central part of an area so that its angle of view can being 360°, these wide angle security cameras are found in IP security cameras systems.There is a formula that relates these parameters that would be:

Focal length of the lens= Distance between lens and object X Height of the object / Height of the sensor.

Wide-Angle Lens

Smaller lenses are known as wide angle security cameras lenses, which produce a greater field of view than security cameras with a larger lens. They capture a large area, though objects will appear smaller within the camera image. Ultra wide angle security camera are designed for monitoring large areas.

Security Camera - Fish Eye View in Miami, Florida

Among wide angle security cameras is the fisheye or 360 degrees security camera. Ultra wide angle security camera help cover large areas at once, which not only reduces needs to install multiple cameras at one spot but also cuts down installation, maintenance and troubles. However, wide angle security cameras outdoor sacrifice some details to get wider viewing angles, which makes it harder to identify faces or other small details.

If your security cameras application needs, demands you to switch between a narrow and wide field of view, you may want to consider buying a PTZ Security Camera. PTZ Security Cameras have advanced features and a motorized varifocal lens that can be used to change the field of view.

wide angle security cameras : Image Sensor Size

The size of the image sensor and type of image sensor also plays a role in the field of view of wide angle security cameras outdoor. Security cameras image sensors come in a variety of different chip sizes for example, a 1/3″ image sensor produces wider viewing angle than that of 1/4″ sensor image sensor. The different sizes also affect the viewing angle – the smaller the chip size the narrower the angle of view.

Conclusion

Remember: a wider field of view isn’t always better. There are pros and cons to each scenario. If you have further questions or would like to learn more about our wide angle security cameras, ultra wide angle security camera, wide angle wireless security camera, wide angle security cameras outdoor or would like a quote on the best wide angle security camera, please don’t hesitate to contact Dicsan Technology. Our friendly team of experience Security Camera Specialists will answer all your questions and provide you with more information. Take the first step ... contact us today!

Other Features

Analog CCTV Security Cameras

Analog CCTV Security Cameras
encode captured images into analog resolution as D1 or 960H.

Security Cameras:
Analog

Analog Security Cameras capture an analog video signal and transfers it over coax cable to a DVR (Digital Video Recorder). The DVR will convert the analog signal to digital, then compress it and store it on a hard drive for later retrival.

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High Definition-Transport Video Interface

High Definition - Transport Video Interface
is a signal processing and transport technology used in HD Security Cameras and DVRs.

Security Cameras:
HD-TVI

HD-TVI Security Cameras currently support video resolution as high as 1080p by using the same coaxing cabling as Analog Cameras use which, makes it easier for people with old Analog CCTV Systems to upgrade to an HD system.

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IP Security Cameras

Internet Protocol Security Cameras, unlike CCTV Analog Security Camera,
send and receives data via a computer network and the Internet.

Security Cameras:
IP

IP Cameras are able to deliver higher resolution and offer digital zoom and on board digital processing. A higher number of pixels will provide a better digital zoom so you'll see further into the distance without degrading the image.

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Megapixel Security Cameras

Megapixel Security Cameras give you HD resolution so you'll be able to record more clear footage. This allows to use fewer cameras and save on maintenance costs.

Security Cameras:
Megapixels

Megapixel Security Cameras deliver the best image quality available, capturing a super high-resolution image and allowing you to digitally zoom in on specific details with great clarity when reviewing recorded Surveillance videos.

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Night Vision Security Camera

Night Vision Security Camera produce clear and detailed full color video in dark conditions.

Security Cameras:
Color Night Vision

Color Night Vision Security Cameras contain powerful image sensors that are more sensitive to light allowing the sensor to absorb more visible light so the cameras will continue to provide full color video images in low-light conditions.

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Thermal Security Camera

Thermal energy travels faster than visible light so a Thermal Security Camera will be able to detect moving heat objects from greater distances than a traditional Security Camera.

Security Cameras:
Thermal

Thermal Seurity Cameras sense thermal energy instead of using visual light to construct images. Since it doesn't see light, it will see at night as well as it does during the day. It sees through obstructions and its not affected by smoke, dust or fog.

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Security Cameras: Wide Dynamic Range

A Wide Dynamic Range Security Camera is capable of switching from color to black and white like a Day/Night Security Camera does.

Security Cameras:
Wide Dynamic Range

Wide Dynamic Range Security Cameras help to figh natural and artificial lighting. These cameras have a special software which allows them to balance too bright or too dark rooms creating a balanced and high resolution video shot.

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Wireless Security Cameras

Wireless Security Cameras offer the same standard features as a wired security camera, including HD quality recording, infrared night vision, and motion detection sensors.

Security Cameras:
Wireless

Wireless Security Cameras allow you to place them up to 1.5 miles away from your local area network. They use top-of-the-line technology to ensure a secure and reliable connection and offer the same standard features as a wired camera.

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Cost of Security Cameras

Although it may seem like a big expense to acquire security systems, at the end it is an investment to protect your most valuable assets.

Security Cameras:
Cost

Having a security system as necessary as paying for services.The price depends on the features and form factors of the equipment, as well as the amount of devices installed, the distance, whether, and if its a wired or wireless system.

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Audio Security Cameras

Adding audio surveillance capability to your CCTV can help make a business safer.

Security Cameras:
Audio

Audio Security Cameras have built-in microphones that allow easy audio recording. Hidden audio security cameras are illegal, so you must get the consent of at least one person in the conversation or hang sign where they are installed.

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Security Cameras Field of View

Hanging a "CCTV recording on premises" sign does not give you consent to record audio. You must specifically state that audio is being recorded.

Security Cameras:
Field Of View

A Network Security Camera can be described as a camera and a computer combined in one unit. Their significantly high video resolution will allow you to capture more area per camera and zoom-in to enhance minor details.

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Security Cameras Image Sensor

Each pixel of an image sensor records the amount of light to which it is exposed and converts it into a corresponding number of electrons.

Security Cameras:
Image Sensor

Image sensor is the element of an electronic camera, which detects and captures the information that makes up the image. This was achieved by converting the attenuation of light waves into electrical signals.

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Power over Ethernet Cameras

Power over Ethernet minimizes the number of wires that must be strung in order to install the network which lowers cost and installation time.

Security Cameras:
PoE

Power over Ethernet (PoE) works by using a single network cable to provide both data connection and electric power over to an IP Security Cameras. This will result in lower cost, less downtime, easier installation and maintenance.

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PTZ Cameras

PTZ cameras are mainly used for surveillance. They are more common for business, military and law enforcement agencies to monitor products or public areas.

Security Cameras:
PTZ

PTZ stands for Pan, Tilt and Zoom. This refers to the capabilities of automated cameras and video recorders. Has the ability to rotate, usually in a full circle, to tilt at different angles up and down, and to zoom in on particular objects.

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Video Compression

Video compression is an important tool to help prevent network traffic from becoming saturated.

Security Cameras:
Video Compression

Video compression techniques consist of reducing and eliminating redundant video data so that the digital video file can be sent through the network and stored. Different compression standards use different methods to reduce data.

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Frame Rate

The frame rate is a parameter that can be set either in the IP security camera, in a video server or in the video surveillance management software.

Security Cameras:
Frame Rate

Frame rate, fps or frames per second, is the number of frames (images) your camera can take per second. The continuous succession of these frames produces the idea of ​​movement because of the minimum differences between them.

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4K-HD

The use of 4K cameras in your system ensures that all the images taken are clear and very detailed.

Security Cameras:
4K

4K security camera is a digital camera with a horizontal resolution of around 4,000 pixels and a vertical resolution of about 2,200 pixels. It is twice as high as the resolution of an existing standard high definition (HD) security camera.

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