Basic knowledge of Lens

Some notices when changing lens

How to attach a single camera len to a C mount camera?

How to measure accurate dimensions?

What’s lens resolution?

What is NA (Numerical Aperture)?

What is the F value (lens brightness) of a len?

What is f value (focal length) of the lens?

What’s back focus?

How to reduce image distortion?

What is a telecentric lens?

What is distortion?

What is aberration?

What’s view angle?

How to extend W.D?

What’s W.D

Depth of focus of high magnification lens

The depth of focus of medium magnification lens (SDS-M)

Depth of focus of low magnification lens

Depth of focus/depth of focus field

I would like to observe in the wide range of 1 to 1000 times.

How to reduce the magnification of high magnification zoom lens (FZ series)

What’s auxiliary lens (Rear converter lens)?

What is an auxiliary lens (front converter lens)?

How to choose CCTV lens?

What is macro lens / macro zoom lens?

What’s zoom lens?