The guiding principle behind every Nikon product has always been to engineer it from the inside out. By creating an optical system specific to the function of each product, Nikon can better match the product attributes specifically to the needs of the user. The result is what Nikon calls the “Optics First Design Principle,” and it applies to every optic Nikon makes. As one of the few makers of optical glass in the world, Nikon has a unique advantage of having the knowledge and experience to specify and select the exact type of glass, lens geometry and multicoatings needed to optimize the performance of any given optic. This level of performance can be seen and appreciated when putting any Nikon optic to the test in real world conditions.