Someone requested one of these, so here you go.
It's quick, it's dirty and it's REALLY REALLY EASY.
- Frame your shot how you want it to appear
- Set exposure to something greater than 0.5s
- Mash shutter butan
- Twist the zoom ring to zoom in or out slightly
- Observe
- Repeat if unhappy
- Be pleased with yourself
- Drink a pint
Here's an example I shot a while back: