How to use the Infrared Index.
Article ID: ART121285 | Date published: 05/12/2015 | Date last updated: 08/17/2015
 

Description

How do I use Infrared Index.

Solution

With black and white infrared film, it is necessary to make a slight adjustment in focus in the infrared indices. After focusing as usual, make this adjustment by turning the manual focusing ring to align the focused distance with the infrared index. When shooting be sure to use a red filter.
  • Switch the focus mode to M to turn the manual focusing ring for adjustment
  • The position of the infrared indices is based on film usage with a peak sensitivity of 800nm and a red filter (such as a Wratten 87). Using black and white infrared film with a different sensitivity may require a slightly different setting. Thus it is recommended to take trial shots with the focusing ring set slight to the left and then right of the appropriate index to find the best position.
  • Please carefully read the infrared film manufacturers instructions for further details

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