Here's how this shot while moving was done. I attached my monopod and S1 to the back of my bike aimed it pretty much for this composition, and kept riding around a several block radius. I had the camera on periodic exposure, 1 per minute.
Then the hard part was to time my ride so that I would be in a good position, going the right speed, with the sun casting my shadow in the frame, at the time the 1 minute expired and the exposure was taken. I would stop every 3 or 4 frames and check the settings.
One thing I learned the hard way, I wanted to keep the bike still (not shaking) while moving fast, and so for a number of these, I got to speed and started coasting. Then I realized when looking at the shots that the chain wasn't moving--so that would not indicate "speed"! In this one I am pedaling, but I am also trying my hardest not to rock the bike!
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