"Camera Shake" - the bane of hand-held photography Benefits of using VC technology An ultra-high zoom lens featuring Tamron's VC mechanism Special features of Tamron's VC mechanism Three-coil system ensures a stable viewfinder image in a very compact lens It's possible to experience the case when the vibration compensation technology was turned on and a change in the subject who comes out in the finder when turning off. Model A20 Focal Length 28 - 300mm Maximum Aperture F / 3.5 - 6.3 Angle of View Diagonal:   75゜23' - 8゜15'  (52゜58' - 5゜20') Horizontal: 65゜28' - 6゜52'  (45゜0' - 4゜26') Vertical:      46゜15' - 4゜21'  (30゜34' - 2゜35') ( ) = the figures when used on APS-C sized digital camera Lens Construction 18 elements 13 groups Minimum Focus Distance 0.49m (19.3”) Max.Mag.Ratio 1 : 3  (at  f = 300mm, MFD : 0.49m) Overall Length 99mm (3.9")* Maximum Diameter 78.1mm (3.1") Filter Size 67mm Weight 555g (19.6oz.)* Diaphragm Blades 9 Minimum Aperture F / 22 ~ F / 40  (28mm ~ 300mm) Standard Accessory Flower-shaped hood Compatible Mount Canon**, Nikon*** * Values given are for Nikon cameras.   The images in this leaflet are taken with prototype model. The cosmetic design and specs are subject to change without notice. ** If the 28-300mm Di VC (model A20) for Canon is used with EOS-1Ds, the Vibration Compensation Mechanism will not function properly.       · EOS 1-Ds When 28-300mm Di VC (model A20) is used in combination with some of the EOS Series (film camera), the VC function may not work.       · EOS- Rebel T2 (300X, Kiss7), Rebel K2 (3000V, Kiss Lite), 100QD, 10QD, 850, 750QD, 650, 620, 630 (630QD, 600) *** Nikon mount has a built-in AF motor.