Top features: - Ideal for landscapes and architecture with attractive sunstars and lens flare - Special elements help maintain image quality across the focusing range - Silent focusing works quickly without causing unnecessary noise - Weather resistant design so you can shoot outdoors Ideal for landscapes The Sigma 12 - 24 mm f/4 DG Wide-angle Zoom Lens has a prime 135 mm focal length that's ideal for landscape and architecture photography. With a wide aperture range from f/4 - f/22 and nine rounded blades, this lens helps you to capture attractive looking sunstars, and handles lens flare well. Special elements To maintain image quality throughout the focusing range, the lens utilises various glass elements with extraordinary, special low and “F” low dispersion glass which help correct chromatic aberration. The Super Multi-Layer Coating helps minimize flare and ghosting, even when you're shooting in backlit conditions. Silent focusing Thanks to the Hyper Sonic Motor in the lens, it focuses at high speed with low noise, so you're able to quickly focus in on your subject without adding unnecessary noise. Weather resistant design Work in outdoors safe in the knowledge that your Sigma lens is protected against dust and water drops thanks to rubber sealing and a water- and oil-repellent coating.