This is one of the first pictures taken with my new EF300 f4 IS Lusm lens. I sold my 100-400 to purchase this and i'm amazed at the sharpness. Let me know what you think.
Hi Cedric, indeed the EF300 is much sharper than the 100-400, its also lighter and not as bulky. With my 1.4x extender I get 2 lenses in one both with auto focus. I'm certainly not looking back, in fact i'm going to start saving for the EF500 f/4 IS Lusm.