ADJUSTING EXPOSURE FOR
TELECONVERTERS AND/OR
EXTENSION TUBES

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

To use the calculator:

• Enter the lens' Aperture that you will be using
• If you are using a Teleconverter, enter the magnification factor or click on one of the common teleconverters to the right
• If you are not using a teleconverter, leave this box blank (do not use 0's)
• Enter the Focal Length of your lens
• If you are using Extension Tubes, enter the length
• If you are not using extension tubes, leave this box blank (do not use 0's)
• Click on "Calculate"

Note: To make new calculations, you need to manually delete any inputted information

You can make calculations using both teleconverters and/or extension tubes

"NaN" is Javascript for "Not-a-number", and means someone has done something silly

When you want to return to OCPA's Website Opening Page,
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    |

If you have reached this page using a search engine, you may not be seeing the entire thing as this site uses frames. Click here to reset the page.
|    Calculator Page Reset    |

|    Return to OCPA Website Opening Page    |

|    Contact OCPA    |

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

http://imaginatorium.org/index.htm Brian Chandler (author)