Kids in a tree

on

Feb18a

You can learn many things from children.  How much patience you have, for instance.  ~Franklin P. Jones

Here are my kids with two of their cousins, in a tree, obviously.

But what intrigues me about this picture is the way the bright light coming through the trees made vertical streaks on the picture.  Any of you real photographers know what's going on here, and how to prevent it?