Eyesight, visual acuity

EN: Eyesight, visual acuity


The ability of the eye to distinguish details of an object s shape. Expressed as a numerical value which indicates the inverse of the minimum visual angle at which the eye can clearly distinguish two points or lines, i.e. the resolution of the eye in reference to a resolution of 1 . (Ratio with a resolution of 1 assumed as 1.)
Canon glossary EU