| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,773,073,447 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
aperture |
Also found in: Medical, Legal, Wikipedia, Hutchinson | 0.04 sec. |
apertureAn orifice. It often refers to an opening in which light is allowed to pass in optical systems such as cameras and lasers. See f-stop and numerical aperture. aperture Physics a. a usually circular and often variable opening in an optical instrument or device that controls the quantity of radiation entering or leaving it b. the diameter of such an opening aperture [′ap·ə‚chər] (electronics) An opening through which electrons, light, radio waves, or other radiation can pass. (graphic arts) A rectangular cutout on an aperture card. (optics) The diameter of the objective of a telescope or other optical instrument, usually expressed in inches, but sometimes as the angle between lines from the principal focus to opposite ends of a diameter of the objective. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | ||
|---|---|---|---|
| And you'll probably never read something like this in another movie review: It's impossible to overemphasize the importance of the contributions of HD technician Stefan Ciupek, who controlled the video color balance and amount of light that came through the lens aperture, and focus-puller Andre Schneider. 75um-pixel, 1/4-inch lens aperture 3M-pixel CIS is a unique combination of Samsung's 5-inch lens aperture with a pixel measurement of 2. |
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|