Slightly wider than the venerable 50mm standard focal length, the Sony A mount SP 45mm f/1.8 Di USD from Tamron presents a unique perspective and pairs it with a sophisticated optical layout for enhanced image quality. One Low Dispersion element and two aspherical elements help to control a variety of aberrations and distortions for consistent and even illumination and sharpness, as well as reduced color fringing, and eBAND and BBAR coatings work to suppress flare and ghosting for increased contrast and color fidelity.