Jonty Posted March 11, 2013 Report Share Posted March 11, 2013 I've been looking at some board lenses for use in a DIY NV set up, this is new territory for me so some advice would be appreciated. Looking at the various lens specifications, they have a diaganol fields ranging from around 20 degrees to 50 degrees. I'm not sure exactly what this means or which would be best to be mounted behind a scope. I think I can pretty much guess what the diaganol field is, but I'd rather hear it from someone who actually knew what they were talking about. Thanks Quote Link to comment Share on other sites More sharing options...
Bewsher500 Posted March 13, 2013 Report Share Posted March 13, 2013 i started one of these focal length is a consideration too wider FOV means you won't get a decent sight picture as the inside of the tube will be shown will find the exact details of which one I ended up with Quote Link to comment Share on other sites More sharing options...
Jonty Posted March 13, 2013 Author Report Share Posted March 13, 2013 Thank you, much appreciated!! Quote Link to comment Share on other sites More sharing options...
Gregthegreat Posted March 14, 2013 Report Share Posted March 14, 2013 http://www.rfconcepts.co.uk/lens_calculator.htm Greg. Quote Link to comment Share on other sites More sharing options...
sitsinhedges Posted March 14, 2013 Report Share Posted March 14, 2013 Save time and money. Buy a watec first time around Quote Link to comment Share on other sites More sharing options...
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