The red lines are from the laser hologram low-light focusing system that my camera uses.
It shoots a grid pattern of laser light onto the subject from an emitter on the end of the lens that provide enough contrast for the F717 to focus even in total darkness.
They are pretty bright and are plainly visible in all but the brightest environments. In fact they tend to freak people out when spotted--think laser gunsights in the movies--or when they twinkle in someone's eyes.
(Certified to be safe, but I'm still glad to be on the delivery side vs the receiving end).
Normally they shut off before the shutter trips, and should be impossible to capture.
So how the hell did I get this photo?
Your speculations are welcome in the comments section.