Barbican1987
Well-known member
Modern binoculars invariably seem to have the body made of Magnesium alloys or plastic, i .e. Polycarbonate.
Magnesium alloy bodies always tend to be heavier than polycarbonate, which is an advantage if you are viewing something for a long period. So why aren't all binoculars made from polycarbonate, is it something to do with the thermal expansion and contraction and/or the durability of the body and the stability of the prisms and lenses.
I am sure there is someone is highly knowledgeable about this aspect who could enlighten me please.
Magnesium alloy bodies always tend to be heavier than polycarbonate, which is an advantage if you are viewing something for a long period. So why aren't all binoculars made from polycarbonate, is it something to do with the thermal expansion and contraction and/or the durability of the body and the stability of the prisms and lenses.
I am sure there is someone is highly knowledgeable about this aspect who could enlighten me please.