如何计算Flash Guide
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A flash guide number calculator determines correct aperture and flash distance settings for photography lighting. Guide Number = aperture × distance. Higher guide numbers indicate more powerful flashes; knowing the GN lets you predict exposure without test shots.
分步指南
- 1Input parameters for calculation
- 2Apply formulas based on selected mode
- 3Review and export results
例题解析
输入
Sample values entered
结果
Calculated outcome
Results depend on parameter values
常见错误注意事项
- ✕Wrong parameters
- ✕Missing adjustments
常见问题
What does this calculator do?
Set parameters
How do I use this calculator?
Run calculation
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