What is that that flies across the screen?   I was reviewing some video I shot and noticed something zipping across the screen.  It takes about .2 sec so look closely.  What do you think?
I can give anyone the raw video by Dropbox if you are interested.
gds3d@comporium.net  

Maybe a golf ball...  

It traveled a few hundred feet in 0.2 seconds over the lake.  

You need to break the video down a lot. I'll download the video and check it out.

Probably a bug.

we built an air powered golf ball gun a few years back and we could easily shoot a golf ball that far with fairly good accuracy. When you slow it down. it sure looks like a golf ball shot from that house behind it.
or someone with a hell of a good swing.

Love it...

It was some kind of flying bug.
Many times I've seen it on my shots.