FLASH CALCULATOR

Visit OCPA's New Webite at:
http://www.oregoncoastphotoclub.com

• Enter the guide number (GN) for the strobe (orange)
• Enter either the aperture or flash to subject distance (orange)
• Select your flashes power and your ISO (blue)
• Click on calculate

Guide Number (GN):			Power full power 1/2 power 1/4 power 1/8 power 1/16 power	Film Speed ISO 50 ISO 100 ISO 200 ISO 400 ISO 800
Aperture:
Distance (ft):

Remember: 1/2 power = closes aperture down 1 stop

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just close this browser window

|    Depth-of-Field    |    Focal Length Conversion Table    |
|    Teleconverter & Extension Tube Exposure    |
|    Resolution and File Size    |
|    Focal Length Needed    |    Angle Of View    |
|    Flash Calculator    |    f/Number Arithmetic    |
|    Scanning & Printing Calculators    |
|    Calculator Home    |

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|    Calculator Page Reset    |

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Copyright © 2002-03 OREGON COAST PHOTOGRAPHERS' ASSOCIATION, Inc. All rights reserved.
Version: 1.0
Revised: October 20, 2002