Hi i am using a Canon 7D With either a 300 2.8 L IS or a 70-200 2.8 L IS Lens and have had amazing results in all types of photograghs with both lenses ive picked up a 75-300 IS and the results are Horrendous tried micro adjustment and still not happy has anyone else had bad results with this lens camera set up ? Would appreciate all comments...........Thanks
P.S Perhaps i should just stick to L Glass

