Tamron's conversion factor is 1.55 x. Only two letters - but what clout in the results. The high-performance class of Tamron stands for Super performance, SP. Lenses, in whose construction engineers free hand had and uncompromising worked up to the optimal performance characteristics.
Tamron SP 70-300mm F/4-5.6 Di USD Lens Model for SONY A mount. Tamron SP 70-300mm. Lens Hood. Front Lens Cap. Rear Lens Cap. Photos SHOW THE REAL UNIT FOR SALE ! 100% GENUINE PRODUCT! (this is not FAKE ).