what you mean to increase the speed? the place wasnt bright enough and i had to use fast shuttle speed thats why I used ISO400. Even with ISO 400 I had to adjust the levels in PS to make the picture brighter. It would probably be better if I had an external flash. I also applied ISO grain correct filters so maybe there was some blurring. I don't really know how to focus this kind of shots leh so normally use auto focus which wouldnt be very accurate if I wanna take a fast snap.