Filming - Technical Questions BACK TO CATEGORIES Abby Singer - What's an Abby Singer Check The Gate - What does that mean? Digital - HiDef versus film. Thoughts? DP - Can you work as a DP (Director Of Photography) and an LD (Concert Lighting Director) at the same time? Green screen - Green screen and blue screen. What's the difference? Jobs - What does a Producer / D.P. / Art Director / Grip / Gaffer etc. do? Scheduling - How long does a production take? Telecine - What is it? Zoom lenses - My lecturer says they're uncool. What do you think?