It’s a glass laser block! I used my green laser pointer on glass blocks in the lobby at building 100 at Daytona State College. This was a lot of fun and I enjoy effects like these. I used a six-second exposure and positioned my Canon Rebel XTi on a makeshift tripod and used the 10 sec. timer to avoid jostling it.

Canon Rebel XTi, EF 50mm 1:1.4, 6/1, F16.0, 50mm, ISO100, 2011-01-05T18:23:13-05, 20110105-232313rxt

Location: Daytona State College, Building 100, Wetherell Student Services and Administration, Floor 1, 1200 W. International Speedway Blvd., Daytona Beach, FL  32114

Download the high-res JPEG or download the source image.

This work is licensed under a Creative Commons Attribution 3.0 License. Credit me as Richard X. Thripp and link here.