Ziess Bino's

Real long shot this one! Getting a little fed up with clients that turn up with bino's that put my set to shame, even though good in good light conditions they suffer with light gathering when the conditions are darker ie first thing in morning as sun breaking or evening as the day light dims. Anyway if, and it's a big IF, some one has a top quality set of bino's from Zeiss or equivalent make and would like to trade against some work that I can do then please let me know....