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The information on this page was provided by Ed Scott - I have EMailed Ed on several occasions to ask permission to include this information in the IR FAQ and have yet to receive a reply. Ed, if you read this and would like me to remove the info. please let me know.
| The following table shows the spectral sensitivity plots of several infrared and regular films, and compares these to the spectral absorption plots for various infrared filters. |
| Wratten # | Film and Color Filter Spectral Curves |
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HS IR |
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750 |
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400 |
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| The brighter colored areas of the film plots are 0.3 greater than D-min and darker colored areas are 1.0 greater than D-min (or base fog level instead of D-min for infrared film). The dashed lines in the TMAX-400 plot are speculated sensitivity based upon typical panchromatic emulsions as the available sensitivity plots do not contain any information below 400 nanometers. If we can obtain accurate data from the manufacturer this will be updated. |
Part of the Infrared FAQ located at CoCam Photo.
Spectral Curves for B&W Infrared Film and Filters