Originally posted by TenZ.NL That would be wildlife action in my case:
Common Swift K5 with sigma 150-500.
I`ve spend 4 entire afternoons to get this common swift in flight, these animals can reach a staggering 200 Km/h and do the craziest turns. The K5 AF-c just can`t keep up and most of the time won`t even lock on. Worst of all, when finally achieving focus, it will jump and lock into the background when anything appears behind the bird (i.e. Trees, hills, bridges, etc) Improved tracking combined with color-awareness sounds like a gift from heaven to me
The tracking part is already improved on K-30, K-50 and K-5 IIs. They have an optional function to ignore background or something in the foreground. When they do tracking in this mode, objects on the same distance has priority. If you loose your object, they search on the same distance to find the object again and will not focus on the background og foreground immediately, but wait a second before they do.