Kevin Purcell
Well-known member
Also, I believe the fov numbers are not that accurate.
Now that I agree with.
If you check the FOV numbers they look precise but when you do the conversion to angular FOV you find they come out in half degree increments most of the time. So I think they're usually design minimums that an engineer has given the marketer. On measurement you often find the actual number just a little larger (e.g. on the Hawke thread the spec is 8.0 degrees, the measured number is 8.1 degrees).
That's why I prefer to convert them to degrees and consider them based on that (with an accuracy of 1/10th of a degree at best).
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