Getting set up for a green screen shoot- 20x40 green screen was lit with two 20ks very far back. Key light was a 20 x 40’ light grid cloth with four T12’s. Back lights were two 10k’s with 250 frames and some fill ready to go was a bunch of 5ks bounced into a 20x 40 silver lame’, white side. The 28-76 zoom was the perfect lens for the job.