Recently went to my bro's POP ceremony. It was at night and only flood light were used. There are alot of movements from the parade. All the pictures came out shitty, though I was using a Canon 40D with EF-S 17-85mm F4-5.6 IS USM lens. It was really a poor knowledge with good camera issue.
Having said that, I tried using higher shutter speed, picture came out under exposed. Tried super high ISO, turned out quite grainy. My biggest aperture was only F5.6 at max 85mm focal length. Tripod was useless as the still background is clear and human turns out like ghost.
Please teach me what I should do. Thanks!