翻訳と辞書 Words near each other ・ Internal elastic lamina ・ Internal energy ・ Internal entrepreneur ・ Internal erosion ・ Internal Exile ・ Internal Exile (Fish album) ・ Internal Exile (Los Illegals) ・ Internal Family Systems Model ・ Internal fan-cooled electric motor ・ Internal fertilization ・ Internal field separator ・ Internal financing ・ Internal Fire – Museum of Power ・ Internal fixation ・ Internal flow ・ Internal focusing ・ Internal forum ・ Internal gangrene ・ Internal hard-drive defect management ・ Internal heating ・ Internal hernia ・ Internal history ・ Internal iliac ・ Internal iliac artery ・ Internal iliac lymph nodes ・ Internal iliac vein ・ Internal iliac vessels ・ Internal improvements ・ Internal intercostal muscles ・ Internal jugular vein Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Internal focusing ： ウィキペディア英語版 Internal focusing An internal focus lens (sometimes known as IF) is a photographic lens design in which focus is shifted by moving the inner lens group or groups only, without any rotation or shifting of the front lens element. This makes it easy to use, for example, a screwed-in polarizing filter or a petal shaped lens hood. During macro photography, using an internal focus lens reduces the risk of the front of the lens accidentally hitting the subject during focusing as the front element does not move.〔("Measuring focal length" )〕 The physical size of an internal focusing lens does not change during focus, nor does the front of the lens rotate. This is particularly useful for large lenses, keeping the size more compact, or when using filters or accessories mounted on the front of the lens that may require careful alignment. One issue internal focusing lens can have is that the true focal length of the lens is reduced when not focused at infinity. ==See also== * Breathing (lens) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Internal focusing」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.