Shutter Speed Fail
I took this shot from a hotel courtyard in Miami, FL. It was late, and dark, so I bumped up the ISO and set mu shutter speed to .6 seconds to get the light I wanted.
The result: blur.
I know the rule is nothing longer than 1/focal-length for hand-holding the camera, which for this lens is 1/35 (or 1/52 for effective focal length for my sensor type APS-C camera). Knowing that, and still wanting to get the shot in low lighting, I made the shutter speed far too slow for handheld use.
Understanding the rules about shutter speed, aperture, and ISO is pretty straightforward. Applying them effectively is harder.
Next time: tripod.