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Zone focusing
| Глоссарий по фотографии |
A way to focus that utilizes the depth of field scale rather than the actual distance from camera to subject. zone focusing is most useful for candid, street photography.
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Focus, английский
- Фокус; фокусировать
- That spot where the wavefront originating at a point on the source is converged to form a point image. fresnel reflection, fresnel lossesthe fraction of the incident radiation specularly reflected by an interface between two media of different refractive indices.
- As a noun, the point where rays of light meet which have been reflected by a mirror or refracted by a lens, giving rise to an image of the source. as a verb, to adjust focal length for the clearest image and smallest spot size.
- Causing light to form a point, or sharp image on the image sensor or film.
- A point through which rays of light converge or from which rays of light appear to diverge when entering or emerging from an optical system.
- 1. the point where light rays converge through a lens 2. the centre of an infection (note: the plural is foci.) verb 1. to adjust a lens until an image is clear and sharp 2. to see clearly he has difficulty in focusing on the object.
- Фокус
- N фокус | a фокусный class
- A point where converging rays or lines meet.
- The search topic selector menu from which you can select an item that an analysis focuses on.
- Position of a viewed object and a lens system relative to one another to offer a distinct image of the object as seen through the lens system. see accommodation and depth of field. focus, principal plane of: single plane actually in focus in a photographic scene.
- Position of a viewed object and a lens system relative to one another to offer a distinct image of the object as seen through the lens system. see accommodation and depth of field. focus, principal plane of: single plane in focus in a photographic scene. focusing, automatic: (1) feature of a camera whereby the lens system adjusts to focus on an object in the field of view. (2) metaphorical attribute of a borescopic instrument’s depth of field (the range of distance in focus). the depth of field is so great in the case of video borescopes that focusing is unnecessary for most applications. despite the name, no mechanism is actively adjusted. the large depth of field is due both to the small diameter of the lens aperture and to the proximity of the lens to the charge coupled device. focusing, primary: focusing by the lens of the image onto a fiber optic bundle at the tip of a probe. focusing, secondary: focusing at the eyepiece of a borescope or other optical instrument, specifically the manual refocusing needed when the viewing distance changes. footcandle (ftc): disfavored unit of illuminance, where 1 ftc = 1 lm·ft–2 = 10.76 lx. footlambert (ftl): disfavored unit of luminance, where 1 ftl = 3.426 cd·m–2.
- Position of a viewed object and a lens system relative to one another to offer a distinct image of the object as seen through the lens system. see accommodation and depth of field.1 focusing, automatic:
- Position of a viewed object and a lens system relative to one another to offer a distinct image of the object as seen through the lens system. see accommodation and depth of field.1 focusing, automatic: (1) feature of camera, usually incorporating a range finder, whereby the lens system adjusts to focus on an object in part of the field of view. (2) metaphorical attribute of a borescopic instrument’s depth of field (the range of distance in focus). the depth of field is so great in the case of video borescopes that focusing is unnecessary for most applications.1 longer depths of field are obtained by reducing the optical aperture. focusing, primary: focusing of an image by the lens onto a fiber optic bundle at the tip of a probe.1 focusing, secondary: focusing at the eyepiece of a borescope or other optical instrument, specifically the manual refocusing needed when the viewing distance changes.1 focus, principal plane of: single plane actually in focus in a photographic scene.1 foreground temperature (see instrument ambient background): temperature of the scene behind and surrounding the instrument as viewed from the target.
- Position of a viewed object and a lens system relative to one another to offer a distinct image of the object as seen through the lens system. see accommodation; depth of focus. footcandle (fc): disused unit of illuminance, where 1 fc = 1 lm/ft2 = 10.76 lx. footlambert (ftl): disused unit of luminance, where 1 ftl = 3.426 cd/m2.
Focus, латинский
Focus #, русский
Просьба всем бить цель # в первую очередь
Focus (camera), английский
To adjust the distance setting on a lens or let an automatic focus device do it for you.
Focus (light), английский
To vary a spot light`s beam size and intensity. see: flood, spot, focus range, and beam angle.
Focus (of an earthquake), английский
Focus (pl. foci), английский
Очаг (патологического процесса) также используется в более широком смысле – эпидемический очаг (focus of
Focus (yours), английский
To ignore the pandemonium around you while you light.
Focus adjustments, английский
Корректировка резкости focus chain фокусная цепочка focus control table таблица управления кадрами focused beam сфокусированный луч focused control активный элемент управления focused event активное событие focused view выбранный объект; выделенный объект focuser фокусирующее устройство focus error signal сигнал расфокусировки
Focus assist, английский
- Some cameras employ a visible or invisible (infrared) lamp to illuminate the subject so the autofocus can work in low light or total darkness.
- Cameras with this send out a light, either normal or infra red to light up the subject to assist with the autofocus in low light or darkness.
Focus error signal, английский
Focus factory, английский
A feature of lync server or office communications server that helps to manage conferences and schedule meetings.
Focus group, английский
- Фокус-группа
- A discussion group of lay people brought together under professional guidance to discuss issues such as care
- Фокусная группа; фокус-группа небольшая группа лиц, на основании беседы с которой проводится уточнение имеющихся у населения знаний по определенным вопросам здравоохранения, необходимости и возможности их изменения.
Focus group discussion, английский
- Дискуссия в составе фокус-группы метод социальной и/или санитарно-просветительской работы.
- Дискуссия в составе фокус-группы метод социальной и
Focus lock, английский
- Pre-focusing the camera and then moving it to re-compose the image before capturing it. accomplished by half-pressing the shutter button and keeping it held at that position while moving the camera to another point before pressing it all the way to capture the image.
- In autofocus camera systems, a button, lever, or push-button control that locks focus at a particular distance setting, often used when the main subject is off to the side of the frame or not covered by the autofocus brackets in the viewfinder.
- Focus lock means pre-focussing the subject and re-framing by moving the camera. this is done by half pressing the shutter to focus and fully pressing to expose. done to ensure crisp, sharp eyes for example.
Focus of control, английский
In a sequence diagram, the time period during which an object or actor is performing an action. activation is represented by a thin rectangle.
Focus of dual search unit, английский
Focus of infection, английский
- Очаг инфекции см. effective disease area (эпидемический очаг), focus (очаг), natural focus of disease (природный очаг болезни).
- Очаг инфекции см. effective disease area (эпидемический очаг), focus (очаг), natural focus of
Focus ok circuit, fok, английский
Схема контроля фокусировки луча используется в эпу с коррекцией вращения при помощи лазерного луча
Focus plane, английский
Focus projection and scanning, английский
Photography, английский
- Technique of producing permanent images on sensitized surfaces by means of the photochemical action of light or other forms of radiant energy.
- Writing with light.
- The word photography comes from two old greek words “phos” meaning light and “graph” meaning to draw. so photograph literally means to draw with light, or a drawing made with light. so photography is the art of drawing with light.
- The act of taking pictures with a camera the development of x-ray photography has meant that internal disorders can be more easily diagnosed.
- Фотосъёмка, фотография
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Auxiliary lens, английский
An add-on optical device that alters the focal length of the prime lens for close-up, telephoto, or other special effects photography. the close-up devices, for example, usually comes in +1, +2, and +3 powers; the higher the number the greater the magnification.
Variable contrast, английский
A type of black and white printing paper that when exposed under different color light yields different printing contrast grades.
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