What is varifocal lens and when should I use one?
You may want some of your cameras to have a varifocal lens. Varifocal lens is kind of zoom lens where you have a range of focal lengths you can take. For example, we sell many 2.8mm-10mm lens will allow you to adjust for the field of view you like (within that specified range). In essence, you have may lenses to choose from to get the perfect angle and width. Varifocal lenses cost more because you have the ability to self adjust the lens. Use a varifocal lens when you want to self adjust the width and the zoom. manually upon setup. Varifocal Lenses work nicely for cash registers, hallways, monitoring doors, license plates – virtually any object that you need to focus in on. You can manually set it to give you a narrow angle and more of a zoom on an object. The higher the number, the smaller the field of view and bigger zoom effect (objects become closer). So if you think you may want to “get closer” to an object, you may want to choose a varifocal lens to adjust so you can determine th
