For those of you who use this lens (C or S) for birding AND utilized the USB Dock to custom set, which custom AF setting have you found more effective: FAST AF PRIORITY or STANDARD AF?
If FAST AF PRIORITY, have you experienced any noticeable drop in AF accuracy?
Do you use the settings alternatively depending on whether it's BIF or bird portraiture?
Just got this lens the other day and when out for testing yesterday using the lens' default AF setting. Although successful and I was quite pleased with the lens, I lost quite a bit of good shots due to its sluggish AF hunting. So I'm wondering about your experience with the different settings. I want to go out and find it out by myself, but the weather isn't cooperating.