Fireworks by David Johnson: "The way I captured the photos was actually pretty simple... it just required good timing. Having the camera in Bulb mode (exposure is as long as I hold down the shutter) was key. I put the camera out of focus and would start an exposure when I could see the fireworks going up. Once they exploded, I quickly refocused the camera. This created an effect of blobbed/out of focus light that slowly converges into fine points."