Canon 10x30 IS II Binoculars - Brand New review
You get also a bit too narrow field of view, a bit too short eye relief distance, and a bit too low transmission for the Porro II system; a bit too truncated exit pupils, and a bit too short warranty period.
solid casing,, sensible correction of chromatic aberration,, very low astigmatism,, excellent coma correction,, sharp images practically to the very diaphragm,, slight brigntness loss on the edges,, very good colour rendering,, dark areas around exit pupils,, efficient Porro II prisms made of BaK-4...
such optical system should provide transmission exceeding 90%,, short warranty period,, exit pupils not especially round in shape.