The Samyang 35mm F/1.4 Aspherical UMC Wide Angle Lens is a great addition to Samyang's professional line of lenses, and it's a beauty! It is superbly constructed with spectacular sharpness and high contrast. The Samyang 35mm F/1.4 is the least expensive 35mm F1.4 lens in the market! The lens is an optically sophisticated lens designed for full frame cameras, and it can also be used on APS-C and Four/Thirds cameras. The lens is beautifully constructed with multiple lens elements made of quality glass with a high refraction factor. This enables Samyang to keep the weight low and the dimensions small. The lens is also constructed with one aspherical lens that prevents horizontal chromatic aberration. Samyang has also added a focusing scale to this lens which will help the user focus more accurately.