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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.

चरण-दर-चरण मार्गदर्शिका

  1. 1Input parameters for calculation
  2. 2Apply formulas based on selected mode
  3. 3Review and export results

हल किए गए उदाहरण

इनपुट
Sample values entered
परिणाम
Calculated outcome
Results depend on parameter values

सामान्य गलतियां जिनसे बचना है

  • Wrong parameters
  • Missing adjustments

अक्सर पूछे जाने वाले प्रश्न

What does this calculator do?

Set parameters

How do I use this calculator?

Run calculation

सेटिंग्स