Feature: 1. 23mm focal length, F1.4 large aperture. 2. 11 groups 10 pieces including 2 ED lenses and 2 high refraction index lenses. 3. Electronic aperture, internal focus structure, support auto focus. Precision brass bayonet. Noiseless STM focus motor. 4. Portable and lightweight, only 260g. 5. Support camera multiple shooting modes, support EXIF information record. Specification: Features: 23mm focal length, F1.4 large aperture. 11 groups 10 pieces including 2 ED lenses and 2 high refraction index lenses. Electronic aperture, internal focus structure, support auto focus. Precision brass bayonet. Noiseless STM focus motor. Portable and lightweight, only 260g. Support camera multiple shooting modes, support EXIF information record. Specifications: Brand: VILTROX Model: AF23/1.4E Lens Elements: 10 groups of 11 pieces Focal Length: f=23mm Viewing Angle: 63.4° Max. Aperture: F1.4 Min. Aperture: F16 Aperture Control: 9 Focusing Range: 0.3m ~ ∞ Focus Mechanism: Internal focus Focus Motor: STM + Lead screw Focus Mode: AF, MF Max. Magnification: 0.1 Filter Size: φ52mm Item Weight: 260g / 9.2oz Package Size: 11.5 * 9.4 * 9.3cm / 4.5 * 3.7 * 3.66inch Package Weight: 500g / 17.6oz Packing List: 1 * VILTROX AF23/1.4E Lens 1 * Lens Hood 1 * Front Lens Cap 1 * Rear Lens Cap 1 * Carrying Pouch 1 * User Manual (English, Chinese, Japanese, Korean, German & Spanish) Package List: 1 * VILTROX AF23/1.4E Lens 1 * Lens Hood 1 * Front Lens Cap 1 * Rear Lens Cap 1 * Carrying Pouch 1 * User Manual (English, Chinese, Japanese, Korean, German & Spanish)