Sony A mount. Trying to lighten my load so I am looking to see if someone might be interested in trading for my Tamron 70-200 f2.8 macro LD Di SP A001 for a Sony SAL70300G 70-300mm f/4.5-5.6 G SSM. My lens is near perfect less the one tiny speck of dust on the front element which effects nothing. I used this glass last year for my son's wrestling pictures and it was fantastic. Sharp and pretty fast it never failed me. I am just getting to old to carry around heavy glass so hoping somebody wants to trade. Will also sell for $525 plus shipping.