does continuous zooming affect auto focus?
I photograph a kid running towards me using 70-200 f4 is usm and 40d on ai servo and high speed continous shooting
While the kid is running towards me, I zoom out. My keeper rate is a low 10-20%.
If I use 17-55, also zoom out when subject approaches, my keeper rate is good 80%.
does continuous zooming affect auto focus?
What can I do to up my keeper rate with the 70-200?
I photograph a kid running towards me using 70-200 f4 is usm and 40d on ai servo and high speed continous shooting
While the kid is running towards me, I zoom out. My keeper rate is a low 10-20%.
If I use 17-55, also zoom out when subject approaches, my keeper rate is good 80%.
does continuous zooming affect auto focus?
What can I do to up my keeper rate with the 70-200?