Are you searching for a CCTV Camera Wide Angle Lens and CCTV Fisheye Lens altogether? It can be extremely hard. But with Superior CCTV, you can get all the quality products with a unique set of CCTV in different shapes, sizes, and strengths. It may take you some time to decide which one you want […]
Per Definition DOF := Far Point – Near Point. The formulas for these are really complicated and contain several times the focal length.
To focus on shorter distances, s-mount lenses have to be “unscrewed” . On first glance this seems to be very different from larger Lenses like C- or CS-mount Lenses, that provide a focus ring. If the focusing ring is turned however also in larger lenses the position of a lens package from the sensor is increased. (There are a […]
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If we want to replace c-mount lenses by s-mount lenses it begs the question … Can s-mount Lenses replace c-mount lenses in general? Of course lenses should be of similar quality … Can s-mount Lenses be as good as c-mount Lenses? To answer this question, we should define what’s “good”. At least we should get an idea about …
We describe here the (yes, complicated) relationships between : Focal Length F-Number (=F#) Entrance Pupil Exit Pupil Viewing Angle Chief Ray Angle Image Circle Object side and image side principal planes
Some centuries ago, people noticed with some surprise, that in a dark room sometimes an (upside down) image of the environment is projected across a small opening in a wall. The old latin word for room (chamber) is camera. That’s why the first cameras got the name “camera obscura” ( = “dark chamber”). One of […]
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