T3i with a EF 100-400mm f/4.5-5.6L. Focus problems
Hi I have a canon T3i and just bought a EF 100-400mm f/4.5-5.6L. But mt photos just don't seem as if they are very sharp or focus. I took a photo of a snow owl and the ones with my 55-250mm actually turned out better! I was shooting at a shutter spee...