Tips for D7100 Shooting
If you are shooting through the dirty windshield of your moving car, taking photos of people riding around on bicycles, with your lens set at f/1.4, and your camera set to release priority, using 51 point auto focus, you might get a blurry photo sometimes, no matter how much you paid for the camera. My tip: don't do that.
I hope someone else is driving while all that is going on!
Sarah Cabin John, MD www.sarahanderson.net