1. MAXIMUM APERTURE F1.4: Maximum aperture f1.4. Helps you achieve background bokeh effect and increase the brightness of images in dark environments. 2. ADVANCED OPTICS: F1.4 manual prime lens uses advanced optics to ensure all around clarity and effective light guidance. 3. MANUALLY ADJUSTABLE APERTURE: The aperture is manually adjusted according to the available aperture. Exquisite workmanship, you can put the lens in your pocket. 4. GOOD PERFORMANCE: 50mm F1.4 manual prime lens features an alloy housing and premium leans that performs well and is resistant to damage. 5. APPLICABLE: Manual camera lens is suitable for all kinds of photography, including landscape, portrait, still life, travel, wedding and macro photography.