While not the longest of the long zooms, the Sony H50 does provide above average autofocus performance, critical in this application, with a competent Carl Zeiss lens.
. . . the H50′s image quality is better than expected, and if its images don’t quite sing like those from a DSLR with a subject dedicated lens attached, they’re nevertheless reassuringly sharp and colourful even at the default settings, with the ability to adjust these parameters either way to suit personal taste.