_This image was shot on a APS-C -sensor at a focal length of 35mm. _ 1 Normal is Relative The main job of a lens is to concentrate (focus) light rays so the film or digital sensor can record the scene ...

Choose a lens shorter than the normal and you are deliberately choosing to expand the space, to make things grander, to enhance perspective and push planes apart. Select a lens longer than the normal ...

Camera lenses that carry a range of focal lengths (for example, 18-200mm) can go from telephoto to wide-angle, so are considered zoom lenses. Perspective ...

For example, a 50mm lens on a full-frame camera gives a normal view, but on an APS-C camera it offers a more zoomed-in view, equivalent to the one a 75mm lens would give on full-frame.

Progressive lenses are for perpetual students—those who are ready to embrace the world and all its lessons and don’t want their lenses to stand in the way of such bountiful opportunities.