英语词汇“back focus”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	back focus
释义	back focus noun Photography The distance between the back of a lens and the image of an object at infinity.If the focal length is positive and the back focus B is longer than the focal length, the result is a reversed telephoto, or retrofocus.
随便看	all-state all stater Allston, Washington all-suite all's well that ends well all-talk all-terrain all-terrain bike all-terrain cycle all-terrain vehicle all that glitters is not gold all that —— all the best all the go all there all the same all the time all the way all (the way) down (or along) the line (all) the world over all the —— all-thing all things considered all-through all-ticket

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