"Who do you consider "non-lens company" ?
It is a company that do not design and makes lens themselves. E.g. Sony, radio antenna company, today makes a lens for digital cameras... (used to be Minolta) even no real idea about making lenses... but who care.
Chinese just make it somehow and stick the "name" on it, and many just re-sell it. E.g. Burris: what in common they have with lens design and producing it?
Zeiss, Leica, Nikon, Canon, ... knows what is the Lens and how to construct it, how fix it inside the housing, how to define tolerances, ...
But and here one is free to buy Fly-Fishing rod from China, even they do not know what is Trout... Well cheap. USA makers are right on the rivers where Trout is...
So that is what is "non-lens company."
Last edited by myYukon; 01/02/18.
