well not even had the 5100 a week and im torturing myself with lenses.
basicaly looking at a 300mm tele for shooting sports (american football) and wildlife here in the middle of nowhere.
i had a read on ken rockwells site and he says the 70-300 has better focusing over the 55-300 hence im looking at a fx lens, rather not pay twice for when i hopeully go full frame one day
just wondering if anyones had any experience of the difference at all ?
basicaly looking at a 300mm tele for shooting sports (american football) and wildlife here in the middle of nowhere.
i had a read on ken rockwells site and he says the 70-300 has better focusing over the 55-300 hence im looking at a fx lens, rather not pay twice for when i hopeully go full frame one day

just wondering if anyones had any experience of the difference at all ?