Have had the lens for about 5 months now, combined with a canon 40D. Was initially disappointed, was previously using a tamron 200-500 and still have the canon 100-400. After a few hundred shots began to realise that it's not the lens but my technique, there is a learning curve to this lens. Now only use it on a solid tripod or a beanbag, sharp enough to cut your fingers at times, still plenty of blurred images too but thats always going to happen! Just a brilliant bit of kit.


