| 释义 |
Definition of guide number in English: guide numbernoun Photography A measure of the power of a flashgun expressed in metres or feet. Example sentencesExamples - Such technical items as ‘guide numbers’ don't seem to matter any more.
- The guide number will enable you to calculate the correct aperture, simply divide the distance to the object by the guide number of the flash.
- Small flashes have guide numbers ranging from 45-80, while large shoe-mount units will be up to around 130.
- Unless you're shooting under those conditions, consider the guide numbers to be estimates.
- You can use a flash with coverage wider than the lens you are using with no change to the guide number.
Definition of guide number in US English: guide numbernoun Photography A measure of the power of a flashgun expressed in meters or feet. Example sentencesExamples - Unless you're shooting under those conditions, consider the guide numbers to be estimates.
- You can use a flash with coverage wider than the lens you are using with no change to the guide number.
- The guide number will enable you to calculate the correct aperture, simply divide the distance to the object by the guide number of the flash.
- Small flashes have guide numbers ranging from 45-80, while large shoe-mount units will be up to around 130.
- Such technical items as ‘guide numbers’ don't seem to matter any more.
|