Scale focus について

Words near each other

・ Scale (map)
・ Scale (music)
・ Scale (physics)
・ Scale (ratio)
・ Scale (social sciences)
・ Scale (statistics)
・ Scale analysis
・ Scale analysis (mathematics)
・ Scale analysis (statistics)
・ Scale armour
・ Scale co-occurrence matrix
・ Scale error
・ Scale factor
・ Scale factor (computer science)
・ Scale factor (cosmology)
・ Scale focus
・ Scale for the Assessment of Negative Symptoms
・ Scale for the Assessment of Positive Symptoms
・ Scale Force
・ Scale height
・ Scale insect
・ Scale invariance
・ Scale length
・ Scale length (string instruments)
・ Scale model
・ Scale of chords
・ Scale of harmonics
・ Scale of one to ten
・ Scale of temperature
・ Scale of vowels

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Scale focus ：ウィキペディア英語版

Scale focus

Scale focus, or zone focus, is a type of focusing system used by many inexpensive cameras from the 1940s and 1950s. These cameras have an adjustable focus, but lack a focusing aid such as a rangefinder. It is necessary to determine the distance to the subject and set the focus using a scale printed on the lens. If you are good at estimating distances, or have a tape measure at hand, you can get precise, sharp focus with one of these cameras.
== Technique ==

Today the term "zone focus" refers to the technique of setting a fixed focal distance (turning off autofocus), and often a fixed aperture, hence fixing the depth of field, and then taking photographs at that distance; the DOF can be read off of the DOF scale on the focus ring, hence the term "zone". This is frequently used in street photography to allow rapid and candid "shooting from the hip" (shooting without composing in the viewfinder) and avoiding autofocus lag.〔(Zone Focusing ), Markus Hartel, January 22, 2006〕〔(Zone Focus ), photo.net, March 2004〕 Zone focusing is also useful for pet action photography, where the time delay of focusing may be unworkable.

抄文引用元・出典: フリー百科事典『ウィキペディア（Wikipedia）』
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