lens holder
21Photography — 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… …
22Headlamp — Headlight redirects here. For other uses, see Headlight (disambiguation). High Beams redirects here. For the urban legend also known by that name, see Killer in the backseat. A motor scooter s front with an impractical number and variety of… …
23Medium format (film) — This article is about medium sized film formats. For formats of a different medium, see format (disambiguation). A size comparison of medium format film (left) and 35 mm film. Medium format film lacks the sprocket holes of 35 mm film. Medium… …
24Color photography — Color film redirects here. For the motion picture equivalent, see Color motion picture film. A circa 1850 Hillotype photograph of a colored engraving. Long believed to be a complete fraud, recent testing found that Levi Hill s process did… …
25Stage lighting instrument — Stage lighting instruments are used in stage lighting to illuminate theatrical productions, rock concerts and other performances taking place in live performance venues. They are also used to light television studios and sound stages.Terminology… …
26Optician — An optician uses a lensometer to check eye glasses. An optician is a person who is trained to fill prescriptions for eye correction in the field of medicine …
27photoengraving — /foh toh en gray ving/, n. 1. a photographic process of preparing printing plates for letterpress printing. 2. a plate so produced. 3. a print made from it. [1870 75; PHOTO + ENGRAVING] * * * Any of several processes for producing printing plates …
28Nikon D200 — Type Digital single lens reflex Sensor Nikon DX format 23.7 mm × 15.6 mm CCD Maximum …
29Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …
30Schmidt camera — A Schmidt camera, also referred to as the Schmidt telescope, is an astronomical camera designed to provide wide fields of view with limited aberrations. Other similar designs are the Wright Camera and Lurie Houghton telescope.Invention and… …
