This was from the first year I successfully shot hyper firewords bursts from my twin-rig setup. I only got a couple of shots that year, but the results were good enough to keep me trying. I used a formula I got from Don Lopp to calculate the stereo base, and I came up with 22 feet. After Don looked at the shots he said, “You know, since you don’t have anything *behind* the fireworks you could double the base. Ive been shooting with a 40 foot base ever since. Shot with twin Hasselblads fitted with 150mm lenses.