Quote Originally Posted by Jonno888 View Post

Do you know what the closest thing to a fresnel light would be in the CFL world ?
A Fresnel is just a kind of flat lightweight lens, used to focus a point-source into a pencil-beam. You can use one just as happily with a CFL as a HID lamp, though the larger source size means that the (light not camera) focus won't be quite so narrow.