Adapting Smooth Servo Zoom Lenses for DSLR Production, Part 1

DSLRs have become the standard by which current and future large-sensor camcorders are judged. But as we adopted DSLRs and primes to produce more “filmic” video for our clients, we left something critical behind: the feathery smooth servo zoom that serves feature film producers so well. So how do you get that capability on your DSLR?
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