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Message: <blockquote data-quote="looksharp65" data-source="post: 3638310" data-attributes="member: 83771">Small update. I haven't been able to perform any major tests, only a brief look through my 8x32 in the Scandinavian evening darkness.I can vouch for the idea as such in that it actually works to place a prism outside one of the objective lenses, with the prism base laterally.The FOV expands while the compound, binocular FOV decreases so the view looks more like in the comics books. I can detect the added convergence strain and suspect that extended use would cause fatigue with some individuals. I have not yet been able to introduce an ocular-side prism as that would require that I have three hands, so I must either wait for the evolution process to take me there, or find a way to support the binocular so that my two hands can run the prism business.I used a 1 prism diopter trial lens and a 2 prism diopter. The 1 power moves the image 0.57 degrees (10 m/1000 m) and the 2 power 1,15 degrees (20 m/1000 m).It is readily noticeable how the convergence seemingly decreases the magnification. This is exactly what happens when using a porro binocular at a finite distance, although now it's there all the time, even at infinite distance.So how much does this affect the perceived magnification? I'd say it differs between individuals, but for me it looks a lot like changing from 8x to 7x magnification.With the increased FOV, I'd say that the immediate experience is that I change from a 8x32 with 140 m FOV to a 7x28 with a 150 m FOV. Nothing extraordinary, really.I'll be back as soon as I have found a way to introduce the ocular-side prism.//L</blockquote>

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