You are reading a single comment by @Well_is_it and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@Well_is_it
The 550D has all cross type focus points but the centre one is the most sensitive. Your main issue will be with the lens and the buffer filling up.
Manually focusing on a single point and waiting for the subject to hit it can work but ai-servo mode will track the subject continuously while you're holding down the shutter and it works fantastically well with fast zooms. That shot you posted was almost certainly tracked in ai-servo or the Nikon equivalent.
I just don't think your current lens focuses fast enough for tracking something coming at you at 30 mph.