unless u are very sure u can keep the subject relatively fixed within the centre focusing point, choose all AF points. it will first use the centre AF point to focus, and if the subject moves away, the other AF points would be able to track it.
when i used AI Servo to focus on a stationary structure and compared with the normal one shot focus, the latter had a higher burst rate quite close to 5fps while the former had a burst rate of only about 2fps. shutter speed used in both instances were faster than 1/500s so i dun think shutter...
anyone sent their tamron lens for calibration before? will they send it to japan or will they just calibrate it in singapore? will they charge you for the costs if the lens is still under warranty? by the way the 3 years warranty is international warranty right? thanks :)
hi all just wondering if there is a canon viewfinder magnifier available for the 20d? cos i find it quite hard to manual focus using the small viewfinder esp for macros. i know there's a right angle finder but i'm not always taking low level pics. besides it's expensive;p thanks.