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Also may mean "Perspective Control" for a lens that has the ability to shift to tilt to control linear perspective in an image. May also stand for personal computer in conjunction with digital photography. PDAF: Phase-detection autofocus. One of the mechanisms of automatic lens focusing. PF: Purple fringing. A form of chromatic aberration in ...
Semiotics of photography is the observation of symbolism used within photography or "reading" the picture. This article refers to realistic, unedited photographs not those that have been manipulated in any way. Roland Barthes was one of the first people to study the semiotics of images. He developed a way to understand the meaning of images.
The second is a link to the article that details that symbol, using its Unicode standard name or common alias. (Holding the mouse pointer on the hyperlink will pop up a summary of the symbol's function.); The third gives symbols listed elsewhere in the table that are similar to it in meaning or appearance, or that may be confused with it;
Exposure value has been indicated in various ways. The ASA and ANSI standards used the quantity symbol E v, with the subscript v indicating the logarithmic value; this symbol continues to be used in ISO standards, but the acronym EV is more common elsewhere. The Exif standard uses Ev .
Exposure is measured in units of lux-seconds (symbol lx ⋅ s), and can be computed from exposure value (EV) and scene luminance in a specified region. An "exposure" is a single shutter cycle . For example, a long exposure refers to a single, long shutter cycle to gather enough dim light, whereas a multiple exposure involves a series of shutter ...
Photography – process of making pictures by the action of recording light patterns, reflected or emitted from objects, on a photosensitive medium or an image sensor through a timed exposure. The process is done through mechanical , chemical , or electronic devices known as cameras .
In the field of semiotics, these are a type of pure sign, a term which also includes symbols using non-graphical media. Modern analysis of Chinese characters reveals that pure signs are as old as the system itself, with prominent examples including the numerals representing numbers larger than four, including 五 'five', and 八 'eight'.
[4] [3] In figure 5, several related terms and symbols are shown. Focal length (f) refers to the elevation difference between the film and the lens. [2] [4] H is the elevation difference between the lens and the sea level, which is the average level of the water surface. [2] [4] h is the elevation difference between the terrain surface and the ...