Day 50. August 27, 2010. I found this web last night while watering the tomatoes and resolved to photograph is tonight. Turns out when it's pitch dark outside, it's really hard to get a good focus, or even find where the web is, especially with the web waving back and forth in the breeze. Eventually, a housemate came and held my headlamp to the web while I experimented, which was a huge help, so thanks. I just earlier in the day read a tip to use a spray bottle to attach water droplets to the web, so perhaps at a later time, I'll try this again with the 100mm macro, with water droplets in the early morning when there's better natural lighting.
EF135mm, f/2.8. 1/60s. On-camera 580EX II at 1/8 power with diffuser, 430EX II slightly on camera right just very slightly behind the web.