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Message: <blockquote data-quote="Binastro" data-source="post: 2927601" data-attributes="member: 111403">. It wasn't me although I wouldn't mind trying one.I make the apparent field of view 79° in simple measure rather than 70°. That is why I doubt very much whether the specifications are accurate. If they were accurate it would be probably with extreme distortion and poor quality.However, I expect that they may be okay and perhaps 4.5 times magnification.they may actually be quite useful even if they are rather poor quality.</blockquote>