英语词汇“extension tube”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	extension tube
释义	extension tube noun Photography A tube fitted to a camera between the body and lens to shorten the distance of closest focus of an object so that close-up pictures can be taken.I have been there when the Puffins are so close that you couldn't even focus on them with a 300 mm F2.8, without using an extension tube.... If you are using a camera like these, an extension tube or a close-up lens is the ideal tool. I would also get some extension tubes, you can use these on both of the zoom lenses.
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