Author: Robert Beagle Security cameras come in a range of shapes, sizes, and functionalities that allow them to perform in different situations and settings. Surveillance cameras can be divided into a range of categories including Movement, Size & Shape, Functions, and Housing. Keep in mind that security cameras can be organized into multiple categories and can include various features. Movement Fixed security cameras typically stay in the position they are mounted for the lifetime of their deployment. Since the only way to move them is to either reposition or remount the device, fixed cameras are used to make sure that the subject in frame is perpetually on surveillance. “Fixed” can also refer to the type of lens on various types of security cameras. A fixed lens doesn’t let you adjust the focal length, angle of view, or level of zoom. Nearly all fixed lens cameras have a wide-angle lens. When it comes to security camera lenses, the opposite of fixed is varifocal.
Applications – Fixed area of focus for continuous recording of a single area.
Advantages – These low-cost, uncomplicated security cameras are ideal for most consumers as you can simply mount the camera and point it at a target area, with no adjustments to be made with lenses or motors.
Disadvantages – Since these security cameras can only be moved manually, footage just outside of frame will not be able to be captured. Additionally, the only way to enlarge video footage is to zoom digitally, which can cause pixelation at lower megapixel ratings.
A manual varifocal lens has an adjustable focal length. By adjusting the focal length, you can manually select the horizontal field of view of the security camera, allowing you to narrow the field of view to gain more detail of any monitored area. These varifocal lenses can also be motorized, which we will cover next.
Applications – Allows you to manually focus on an area from a distance when more detail is required. For example, capturing license plates and other details at an entrance when the security camera is mounted a distance away.
Advantages – These adjustable lenses allow you to manually select the level of detail of video recording you desire, only limited by the camera’s megapixel rating and lens.
Disadvantages – With a manual varifocal lens, you’ll have to physically take the lens off in order to manually adjust the lens to your desired focal length.
Read more at: Different types of Security Cameras and when to use them Related Article: WHY YOU NEED TO ADD ACCESS CONTROL SYSTEM Learn how you can effectively install security cameras, visit missouricitylocksmith.net Via https://missouricitylocksmithblog.wordpress.com/2022/06/23/different-types-of-security-cameras-and-when-to-use-them/
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