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, ...

Crop factor is an unnecessary complication for beginner photographers – just put the equivalent focal length on the lens ...

Telescope focal length determines image magnification. Field of view (FOV) shows how much sky your telescope displays. FOV is calculated using telescope and camera/eyepiece specs. Match telescope FOV ...

Over on YouTube [Applied Science] shows us how to make an f/0.38 camera lens using an oil immersion microscope objective. The ...