Last night I dusted off my old Canon 7D with a Sigma 18-250mm because I wanted to try a zoom burst of my latest animations. I couldn't use my 6D because I don't have a zoom lens for it. A zoom with these focal lengths doesn't exist for full frame cameras that I'm aware of.
I pointed the camera towards a thermal blanket on which I projected the animations and zoomed in and out with slight intervals in between zoom bursts. That's how I got the high contrast specular dots reflecting off the crumpled thermal banquet. Because the animation keeps playing each zoom burst has a different look than what you'd normally see in a zoomburst of city lights.
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