The Tamron AF 90mm f/2.8 SP Di macro is a recent update to the highly popular AF 90mm f/2.8 SP macro. The lens is a designated Di (Digitally Integrated) lens which refers to an optimized lens design for image sensors specially regarding chromatic aberrations (CAs). Tamron also improved the coating of the lens elements to take care of the more pronounced reflections from the image sensor. The lens belongs to Tamron's SP (Super Performance) line up indicating a professional grade lens similar to Sigma's EX lenses. On APS-C DSLRs the field-of-view is equivalent to about 145mm on full format cameras. The primary application of the lens is, obviously, macro photography but it's not limited to that - infinity focus is possible…… cunoscatorii stiu ce vor.. obiectiv impecabil