Here are the key features of the lens: 1. **E-Mount**: The lens is designed for use with Sony E-mount cameras. 2. **Full-Frame Format**: The lens is compatible with full-frame format cameras, meaning it can take full advantage of the camera’s sensor size. 3. **Aperture Range**: The lens has a variable aperture range of f/2.8 to f/22, allowing for a good balance between light gathering and depth of field control. 4. **Optical Design**: The lens features one low dispersion element and one aspherical element, which help to reduce chromatic aberration and distortion. 5. **BBAR Coating**: The lens has a Broad-Band Anti-Reflective (BBAR) coating to minimize ghosting and flare. 6. **OSD Stepping Motor**: The lens features an Optical Stepping Drive (OSD) motor for fast and quiet autofocus. 7. **Magnification**: The lens has a 1:2 magnification ratio, making it suitable for close-up photography. 8. **Minimum Focus Distance**: The minimum focus distance is 5.9 inches (15 cm). 9. **Weather Sealing**: The lens has a water-resistant design and a fluorine coating to protect against moisture and dust. 10. **Diaphragm**: The lens has a rounded 7-blade diaphragm, which helps to create a smooth bokeh (out-of-focus area).
