An alternative way of quoting magnification, by indicating the ratio of image size to subject size. A magnification ratio of a:t thus indicates the image is twice life-size, a magnification ratio of t [..]

Commonly referred to compact size sensors in modern DSLR cameras. Also know as crop factor. It affects the range of the lens by effectively “magnifying” the image making zoom lenses seem to have a greater range and reducing the angle of view on wide angle lenses. Most modern DSLR [..]