The Hasselblad XCD 25V f/2.5 Lens for X System medium format cameras offers an ultra wide field of view equivalent to 20mm, a bright maximum aperture and an exquisite design with effortless control. X System Lens/Medium Format 20mm (Full-Frame Equivalent) Aperture Range: f/2.5 to f/32 Bright Wide-Angle Prime Lens Minimum Focus Distance: 0.25m Internal Focusing with MF Override 13 Elements in 10 Groups Weight: 592g Filter Size: 72mm Hasselblad has again paired its classic elegant design with stellar optical performance in the Hasselblad XCD 2.5/25V Lens. This wide-angle lens has an equivalent focal length of 20mm and features a maximum aperture of f2.5, allowing for exceptional performance in low-light conditions. Perfect for nocturnal cityscapes, starry skies and indoor portraiture. Expansive View: This 20mm focal length equivalent wide-angle lens captures abundant environmental and subject details and supports over 100-megapixel image resolution. This lens is ideal for capturing a staggering amount of detail.