M28mm F1.4 lens has advanced optical design and is developed for Full Frame rangefinder cameras. 7Artisans involved costly glass to obtain excellent quality. M28mm F1.4 lens formula consists of11 elements in 9 groups including one double-sided aspherical glass, two ED glass, and three High Refractive rare earth glass elements. This lens has taken full advantage of the material characteristics of each glass unit. It has improved optical performance from center to corner resulting to excellent image quality. 7artisans M28mm F1.4 is a great prime for various environmental portraits. It collects maximum light and provides ample view for street photography or architectural shots. Fast F1.4 aperture allows capturing great pictures whenever it is evening or indoor dim light conditions.