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Latin letters containing open counters include c, f, h, s etc. The digits 0 , 4 , 6 , 8 , and 9 also have counters. An aperture is the opening between an open counter and the outside of the letter.
The letter m has three, the left, middle, and right stems. The central stroke of an s is known as the spine. [6] When the stroke is part of a lowercase [4] and rises above the height of an x (the x height), it is known as an ascender. [7] Letters with ascenders are b d f h k l. A stroke which drops below the baseline is a descender. [7]
The f-number N is given by: = where f is the focal length, and D is the diameter of the entrance pupil (effective aperture).It is customary to write f-numbers preceded by "f /", which forms a mathematical expression of the entrance pupil's diameter in terms of f and N. [1]
Aperture (typography), an opening in a partially enclosed loop in a typographical symbol, such as the opening to the right in the letter 'C' or at the top of the letter 'U' Aperture Foundation, a photography nonprofit; Aperture Science, a fictional organization featured in the Portal of video games; Aperture Peak
In typography and handwriting, an ascender is the portion of a minuscule letter in a Latin-derived alphabet that extends above the mean line of a font. That is, the part of a lower-case letter that is taller than the font's x-height. Ascenders, together with descenders, increase the recognizability of words.
Hardware and software ("firmware"), built into the camera, measures luminance of the subject and automatically sets shutter speed, lens aperture or sensitivity; this also allows the camera to set the aperture for manual lenses fixed with an AE chip. [4] AE-L or AEL: Automatic exposure lock. Technology for holding an exposure setting from one ...
Protesters rally outside of the Theodore Roosevelt Federal Building headquarters of the U.S. Office of Personnel Management on February 05, 2025 in Washington, DC.
A letter box, letterbox, letter plate, letter hole, mail slot or mailbox is a receptacle for receiving incoming mail at a private residence or business. For outgoing mail, post boxes are often used for depositing the mail for collection, although some letter boxes are also capable of holding outgoing mail for a carrier to pick up.