The 90mm F2.8 Dg Dn Contemporary Lens for Leica L is a testament to the evolution of mirrorless camera technology, striking a perfect balance between high performance and compact size. This lens is part of Sigma's "I" series, a collection of full-frame mirrorless exclusive lenses designed to meet the growing demand for compact, high-quality lenses with superior performance. This lens is compatible with both L-Mount and Sony E mount systems, with the Dg denoting full-frame sensor coverage and Dn signifying a mirrorless-exclusive design. The 90mm F2.8 Dg Dn | Contemporary lens stands out with its versatile mid-telephoto focal length, making it the longest lens in the I series. Despite its length, it maintains a compact and lightweight design, making it an ideal choice for everyday use. One of the key features of this lens is its ability to utilize the camera's optical correction functionality, a unique advantage of mirrorless systems.