Mcslco Optics (Binoculars Factory)

Specifications: Magnification : 8X Objective Diam.: 42mm Water/fog proof: Yes Focus system: Center Prism system: Porro (Bk7) Eyecups: Twist-up Adapt to tripod: No Click HERE for More Information Quick Enquiry

Mcslco binoculars WD76A 10x42  is filled with  Nitrogen, so that it has very good waterproof performance. Click HERE for More Information Specification: Magnification : 8X Objective Diam.: 42mm Water/fog proof: Yes Focus system: Center Prism system: Porro (Bak4) Eyecups: Twist-up Adapt to tripod: No MOQ: 500PCS Samples: Available

Generally speaking, there are three prism styles for binoculars: Porro Prism ,Roof Prism, and Non-prism binoculars. 1. Porro prism: This optical system gives the user better perception of depth and stereoscopy by offsetting the prisms making the binoculars size bigger than comparable roof prism model. It has a distinctive shape characterized by the use of a combination of two right-angle Porro prisms and, externally, by the offset positioning of the eyepieces from the objective lenses. 2.  Roof prism: This optical  system offers more compact bodies with the prisms positioned in line with object lenses and eyepieces. Prisms are positioned one over the other, lining up the objective lenses and eyepiece centers. The result is a more compact design, allowing pocketsize binoculars to have full-size power capabilities. Prism structure decides the exterior shape of binoculars. Typically, roof prism binoculars are slim and straight while porro prism binoculars are bigg...