I was watching an episode of 'The Life of Birds,' in which David Attenborough was using what looked like a nifty pair of old Leitz Trinovid binoculars. I thought they looked quite elegant, and there were no primary colours or geometrical shapes anywhere. I've read that roof prism binoculars must have BaK-4 prisms and be phase-coated and fully multi-coated, but I've also seen much praise heaped on the Leitz Trinovids and Zeiss Dialyts (pre red dot and blue square). Yet presumably they can't have all these modern blessings. Are they still worth buying?
Michael.
Michael.