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Message: <blockquote data-quote="henry link" data-source="post: 3150272" data-attributes="member: 6806">Mike,I suppose it's possible that the FOV in m/1000m is wrong, but the ft/1000 yrds is just what you would get if you made the mistake of converting meters to yards before multiplying by 3.In this case the subjective field spec is not much help in deciding whether the metric or English FOV is correct. It's close, but not quite right, for the metric FOV if the naive method of multiplying real field by magnification was used. It's also close, but a little too small, for the English FOV if the ISO method was used. If it's a true measurement that would require a little barrel distortion if the English FOV is correct or a very large amount of pincushion if the metric FOV is correct.Henry</blockquote>