The SP 150 600mm G2 Ultra telephoto lens with upgraded optical performance enables handheld shooting with remarkable definition. The new lens builds upon the success of the current SP 150 600mm (model A011) which Tamron first introduced in December 2013, including better overall optical performance and faster AF speed, VC enhancements plus flouring coating and Flex Zoom Lock. This new lens includes three LD (Low Dispersion) lens elements which completely eliminate axial and transverse chromatic aberrations. Anti reflection technologies, band Coating and BBAR Coating improve light transmission and suppress internal reflections, including light reflected off the camera?s image sensors. So even when taking a backlit photograph, ghosting and flare caused by reflected light are fully eliminated. This lens is equipped with a USD (Ultrasonic Silent Drive) motor that delivers excellent responsiveness and control. AF speed is significantly improved and enables high speed focus even when capturing moving subjects. FLEX ZOOM LOCK mechanism quickly locks or unlocks the zoom at any position simply by sliding the zoom ring. The VC (Vibration Compensation) effectiveness is equivalent to 4.5 stops. Specifications: Model Name A022, Focal Length 150 600mm, Format size Di, Maximum Aperture F/5 6.3, Minimum Aperture F/32 40, Diagonal Angle of View 16 Degree25' 4 Degree8' (for full frame format cameras), 10 Degree38' 2 Degree40' (for APS C format cameras), Lens Construction 21 elements, 13 groups, Minimum Focus Distance 86.6 in, Max. Mag. Ratio 1:3.9, Filter Diameter O95mm, Length for Canon:10.2 in / for Nikon: 10.1 in, Maximum Diameter O108.4mm, Weight* for Canon: 70.9 oz. / for Nikon: 70.2 oz., Diaphragm Blades 9 (circular diaphragm), Image Stabilization Performance** 4.5 stops (in VC Mode 3), Standard Accessory Lens hood, caps, case.