Definition of extension tube in English:

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.
〔摄〕（照相机的）近摄延伸管
Example sentencesExamples
- 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.
- I would also get some extension tubes, you can use these on both of the zoom lenses.
- Available options include infrared LED spotlights, backlights, and lenses for cameras from 6 to 75 mm, plus filters and extension tubes.
- An extension tube radically reduces that minimum focal distance.
- If you are using a camera like these, an extension tube or a close-up lens is the ideal tool.

Definition of extension tube in US English:

extension tube

nounikˈsten(t)SHən ˌt(y)o͞ob

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.
〔摄〕（照相机的）近摄延伸管
Example sentencesExamples
- 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.
- Available options include infrared LED spotlights, backlights, and lenses for cameras from 6 to 75 mm, plus filters and extension tubes.
- I would also get some extension tubes, you can use these on both of the zoom lenses.
- If you are using a camera like these, an extension tube or a close-up lens is the ideal tool.
- An extension tube radically reduces that minimum focal distance.

单词	extension tube
释义	Definition of extension tube in English: 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. 〔摄〕（照相机的）近摄延伸管 Example sentencesExamples 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. I would also get some extension tubes, you can use these on both of the zoom lenses. Available options include infrared LED spotlights, backlights, and lenses for cameras from 6 to 75 mm, plus filters and extension tubes. An extension tube radically reduces that minimum focal distance. If you are using a camera like these, an extension tube or a close-up lens is the ideal tool. Definition of extension tube in US English: extension tube nounikˈsten(t)SHən ˌt(y)o͞ob 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. 〔摄〕（照相机的）近摄延伸管 Example sentencesExamples 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. Available options include infrared LED spotlights, backlights, and lenses for cameras from 6 to 75 mm, plus filters and extension tubes. I would also get some extension tubes, you can use these on both of the zoom lenses. If you are using a camera like these, an extension tube or a close-up lens is the ideal tool. An extension tube radically reduces that minimum focal distance.
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