Weighing just 295g with full weather sealing, this lens stands out as an exceptionally portable mid-telephoto prime for full-frame L-Mount and Sony E-Mount systems. Its I Series all-metal build quality and fast internal stepping motor AF deliver a tactile, discreet shooting experience uncommon at this focal length. This lens is best for street and travel photographers who want a lightweight 90mm for candid portraits and compressed details without the bulk of an f/1.4 optic.