The Tamron SP 90 mm f/2.8 Di VC USD 1:1 for Sony is an advanced macro lens that is designed to be used with various Sony cameras. It offers an excellent optical performance that is essential for numerous photography situations. This lens comes with a dust-resistant, moisture-proof construction that consists of two XLD (eXtra Low Dispersion) glass elements and one LD (Low Dispersion) specialized glass element. The ultrasonic AF motor and optimized USD actuator ensure responsive and silent autofocus performance. Moreover, this lens can achieve a circular aperture for giving your pictures a lovely bokeh effect. The lens can be connected to an optional TAP-in console for tuning the focus adjustment and updating the firmware.