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: VILTROXModel: AF23/1.4ELens Elements: 10 groups of 11 piecesFocal Length: f=23mmViewing Angle: 63.4°Max. Aperture: F1.4Min. Aperture: F16Aperture Control: 9Focusing Range: 0.3m ~ ∞Focus Mechanism: Internal focusFocus Motor: STM + Lead screwFocus Mode: AF, MFMax. Magnification: 0.1Filter Size: 52mmItem Weight: 260g / 9.2ozPackage Size: 11.5 * 9.4 * 9.3cm / 4.5 * 3.7 * 3.66inchPackage Weight: 500g / 17.6ozPacking List:1 * VILTROX AF23/1.4E Lens1 * Lens Hood1 * Front Lens Cap1 * Rear Lens Cap1 * Carrying Pouch1 * User Manual (English, Chinese, Japanese, Korean, German & Spanish)Package List:1 * VILTROX AF23/1.4E Lens1 * Lens Hood1 * Front Lens Cap1 * Rear Lens Cap1 * Carrying Pouch1 * User Manual (English, Chinese, Japanese, Korean, German & Spanish)