Dave Powell

Trained in mathematics, physics, computer programming and science journalism. Retired mathematician, award-winning technical and journalistic writer. Past winner of an international business-journalism equivalent of the Pulitzer Prize. And past author and editorial advisor for Sesame Street... where I regularly worked with Jim Henson and Kermit! Now enjoying "retirement studies" of photography, quantum physics and "scientific spirituality." (And restoring a shamefully lapsed relationship with the piano.)

Dave Powell's Posts

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24 July, 2024

Adventures in C-Mount Macro Land

By Dave Powell

C-mount lenses are the tiny optical jewels worn on the fronts of classic 16mm movie cameras. Their minuscule 17.526mm separation between the camera’s mounting flange and f...
Canon 50mm f/1.2 LTM lens

11 June, 2024

Cleaning a Classic Canon f/1.2 LTM Lens

By Dave Powell

A while back, I snagged a beautiful Canon VI-T rangefinder camera for small bucks at a yard sale. It’s probably as close as I’ll ever come to owning a classic Leica. But it had ...