Well...you don't get a rainbow without rain. This was true this particular morning. I met up with Nathan White at Kangaroo Point cliffs for sunrise. The sky was grey, overcast and as we started to photograph it rained. Hence, we photographed from under a shelter! Anyway, we were rewarded with this rainbow that appeared when the sun broke through the clouds.

Canon 5D Mark II
17-40 @ 29mm
ISO 100 f/11 30sec
Lee Big Stopper
Lee 0.6 soft grad