D5100 Focus for Sports
For this purpose get a good video camera. The relatively small sensor (which is all you need for HD video) gives you wider dof, making focus less critical, and the auto focus will be much better. HDSLR's are not good for sports video. The variable-speed power zoom on video cameras are really useful for sports too.
|Umbrellas by pleytime|
from An A to Z of Subjects- Week 21, U
|Glass ball on a perforated metal plate _2 by harubux|