I am looking at getting a longer lens for birding (have a ef-s 55-250 atm) with a tight budget I am looking at a Tokina AT-X 840 AF D AF 80-400mm f4.5-5.6 Lenses.
Or should I keep saving for a while and get a Sigma 150-500?
Does anyone have a 80-400? I have a Canon 450D