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Message: <blockquote data-quote="Binastro" data-source="post: 3227105" data-attributes="member: 111403">. Hi oracleman,I think that the wizard in Canon Asia did the same as you.I think he multiplied 1.0936 x 6.0°, but using feet, yards and metres all mixed up.This actually gives 6.56°. But the 344.5 feet at 1000 yards gives 6.58°.1.0936 is the number of yards in 1 m.He should have use fathoms and cubits.P. S.He might have used Grads or mils, but the most suitable measurement would have been 1 hexacontade, which is exactly 6.0°. This is probably the real field of view of the Canon 10×30 Mark II.</blockquote>