How does the Sigma 20mm f/1.4 Dg Dn Art Lens for Sony E, bundled with an 82mm multi-coated Uv slim filter and microfiber cleaning cloth, redefine the boundaries of astrophotography This lens, a part of the esteemed Sigma Art line, is designed to deliver the highest optical performance and rich expression, making it the ultimate choice for capturing the night sky in all its glory.The full-frame Sigma 20mm f/1.4 Dg Dn Art Lens is a mirrorless version of the Sigma 20mm f/1.4 Dg Hsm Art. It's the only lens of its kind, boasting a maximum aperture of 1.4 and an ultra-wide angle of 20mm. This unique combination offers photographers unparalleled optical performance and limitless potential for ultra-wide-angle creativity in a compact physical size.The lens's exceptional F1.4 brightness and sharpness across the entire image, even at maximum aperture, make it a top choice for astrophotography.