Mirrorless lenses are designed around the short flange distances of modern mirrorless systems, enabling compact profiles without sacrificing optical performance. Canon's RF, Nikon's Z, Sony's FE, and Fujifilm's XF and GF mounts each offer growing ecosystems of native lenses, complemented by third-party options from Sigma, Tamron, and Voigtländer spanning everything from ultra-wide primes to long telephoto zooms.