yo bro, thx for ur advises.
1: i did. prefocus n half press on the button at a pt n wait for him to come into picture. but the moment he slightly sway his body a bit left or right during his dances movement, the pic is blurred le. haha. i did hlaf press n lock the focus thouout the entire concert so u can imagine how tiring the arm is.
2: initially i was using iso200. but find it a bit hard to get sharper shots, so i change to 400. try using wif 800 but it turn out 'quite' grainy thou. so in the end i gave up. hahaz.
3: tele zoom at max will haf a aperture size of bout 4 or something near, but dunno y that night it couldnt get lesser, i didnt play wif manual mode cos no time to slowly check for lighting n stuffs. so dun wan to mess things up if the setting is not correct if i didnt adjust properly. can use flash ah, no prob. i'm using also. just that i didnt go n do some lighting check and adjusting as the lights in the stadium initially is diff thruout the entire show, keep changing color n flicking here n there. usually other events job which i did for fujifilm is just one location so i can be there earlier b4 the event to do some adjusting and tests shots, thats when i will use manual mode so can play ard more.
4: this is an very new concept to me. nv used those b4. so dun wan mess things up during the 3 hr show. hahaz. or else later my gf kill me.