In a machine-vision system, a camera lens serves one purpose: It gathers light and focuses an image on the camera's sensor. Thus, vision-system designers must treat lenses as key elements in ...

Photography is full of fancy terms and complicated science, but we are here to explain it all to you in simpler terms. Today we are focusing on focal length. This term gets thrown around often, ...

I'm trying to figure out how all this stuff relates to one another. Crop factor seems easy enough. If I have a 100mm focal length lens and I put it on my d350, it effectively becomes at 160mm due to ...