Puddles, shop windows, car bonnets, mirrored buildings, sunglasses. Reflections give you two scenes in one frame - the real and the reversed.

The technique is in balancing exposure between the reflection and the subject. Expose for one and the other goes dark. Sometimes that's the picture.

Watch for: your own reflection. Unavoidable sometimes, occasionally brilliant, usually a problem. Position yourself at an angle.

Try this: Find one puddle after rain, get the lens almost to the ground, and wait for a figure to cross the reflected world above it. Tap to expose for the reflection, not the real scene, and the street inverts into something strange.

The point: reflections add a layer of unreality to the street. They make familiar places look strange. That's worth pursuing.