Another lesson learned ..

..albeit at someone else's misfortune.  There is a glen close to our house and a lady, while walking her dog, unfortunately slipped and fell down a hill and needed to be air lifted out.  Before we knew this was why the helicopter was hovering, quite low, overhead I rushed for my camera and changed my lens to get a better shot.  I was in so much of a hurry, I forgot to change the settings to compensate for the change of lens and most of the shots were blurred.  Hopefully I'll remember this the next time!