The Kowa YF Series Porro Prism Binoculars are a new range from the world-famous Japanese scope and binocular manufacturer. Kowa have infused over half a century of heritage in optics design and production into the new YF Series, which boasts top end features such as Kowa Repelling (KR) lens coatings and 100% waterproofing. The YF Series represents the perfect balance between retro design and modern functionality, with one of its most striking attributes being aesthetic beauty. The YF Series has focussing at its core, and various enhancements have been made to the standard focus functions that are usually found on binocular models. For example, the central focus wheel has been substantially increased in both size and stiffness. Furthermore, a large dioptric adjustment ring has been conveniently positioned under the right eyepiece and purpose grooved to give users extra grip when operating. These improvements ensure that the binoculars can be precisely focused and tailored to a user’s individual preference to give a clear and crisp image.