illuminated aperture
1optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
2eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… …
3Nikon Coolpix series — The Nikon Coolpix series is the point and shoot series of digital cameras produced by Nikon. This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced… …
4Photography — is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light sensitive material such as photographic… …
5light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
6Photographic lens — A photographic lens (also known as objective lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media… …
7Cromaclear — slot style. Notice the brick design as opposed to the normal dot trio design Mask close up Cromaclear is a CRT …
8Speckle pattern — A speckle pattern is a random intensity pattern produced by the mutual interference of a set of wavefronts. This phenomenon has been investigated by scientists since the time of Newton, but speckles have come into prominence since the invention… …
9Airy disk — Computer generated image of an Airy disk. The gray scale intensities have been adjusted to enhance the brightness of the outer rings of the Airy pattern …
10Iron sight — Sight picture through iron sights of an H K MP5 submachine gun. The annular shroud around the front post sight is aligned with the rear peep sight to ensure the weapon is properly trained. Iron sights are a system of shaped alignment markers… …
