Powerful Glass: Using high quality optical glass, nano technology multi layer coating, good light transmittance, the pictures will be good and clear. High Performance: F1.7 large aperture, good blur effect, can create a special shallow depth of field effect, clear and in the focus, soft background outside the focus, bring better artistic beauty. Metal Material: Lens mount adopts metal material to ensure stable connection with lens, also not easy to damage your lens, providing a satisfying using experience. Wide Application: 35mm length, the lens Angle of view is diagonal 44°20 ', horizontal 36°30 ', vertical 23°, close to the human eye , and with a large aperture, can be used for portrait, scenery, tourism, flowers, insects, still life, etc. Easy to Use: Designed with compact and light features, the all metal body is strong in strenght but light in weight, makign you feel comfortable during use.