CCTV Lens - vari-Focal - 1/2.7" - M12 Mount - 2.8 mm - 6 mm - f/2.0 (Pack of 5) - for AXIS F1015 Sensor Unit

hey guys today's topic is all about security camera lens sizes I'm gonna show you what the difference is between a wide 2.8 millimeter lens all the way up to a 12 millimeter zoom lens in particular we're going to review camera footage the difference between a fixed and variable lens the math behind lens sizes zoom multipliers sensor size impacts on viewing angles minimal focal distances and lastly we're going to check out to see if lens size has an impact on the cameras infrared night vision all that should provide you with everything you need to know about security camera lens sizes so here we have 4 8 megapixel cameras that all have different purposes because of their fixed lens size and when I say fixed that means that their lenses don't move there's no zooming in and out no way to change their focus their fields are view or their coverage area is consistent another name for these ca