Chemtrails - spraying in our sky

"Everyone talks about the weather,
but nobody does anything about it."
Maple Leaf

Calculator for conversion of 35mm equivalent focal length
to digital camera angle of view.

Supplementary to page: Calculate the altitude of aircraft using a digital camera

If your digital camera instruction manual does not directly specify the angle of view in degrees of the lens at various optical zoom focal lengths then this calculator will provide it in terms of the equivalent to the standard 35mm format.
The 35mm format focal length equivalent in millimeters should be provided in your camera manual.  Enter the appropriate value in the space below and click "calculate":

Enter 35mm
Focal Length:

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