Alex keeps moving so that the ambient light will mask his shadow over the course of the long exposure.
It's a very simple technique which takes time to master.
Thats is spot on! The is so little light and as i move about all the time my body does not have time to reflect back any light to the camera sensor, thus no image will appear as the "main" light in moments or photos like these will be the light coming out from the flashlight. And i m standing behind it making sure that its not pointing at me at any stage, and once i m done i move out of the frame and turn of the light!
how do you think i m doing in mastering it Ed?
i have done a tutorial on it (video) i m trying to upload it on youtube but it does not want to let me do it for some reason. So i have to try a different source