have tokina 80-200 2.8 atx lens would consider trade for apo scope of equal value, some thing in the 3.5" f/7 range. of course in new condition. john P.S. this is not the newer mass produced lens but the origanal pro lens a little heavier and much smother action over all much better made. for those of you out there this is the $1300.00 version.not the $550.00 version.