jonathan_lambert

<p>Shutter speed is not issue, always 1/500 or faster. I use this lens to shoot football warm ups and it's outdoors with speeds at like 1/2000 and same problem. </p>

<p>I am using this lens on a 7D with center point, AF button on and AI servo, aperture 2.8 and with basketball shots sometimes their jerseys or the ball is sharp but their face will be soft or the complete opposite problem if their face is sharp. Is this a depth of field issue shooting at 2.8 or is there something wrong with my lens? I used to shoot with a 80-200 2.8 and never had this problem. </p>