Night time HDR

Each time I've come home down Great South Road I've been taken with the sight of the Telstra Clear Pacific Centre and the way it's illuminated.  Tonight I decided to take a tripod and a few shots to see if you think it's as impressive a sight as I think it is.  5 shots, in the order of 20 seconds each, combined in Photomatix to give the effect you see here.  The dots in the sky are stars.

I took a few other shots, not all of them HDR.  The next shot is also a 5 shot HDR image, tajen from a slightly different angle and without any cropping.

The third is just a long exposure of the new junction at Manukau.  I've always liked the streaks from the car headlights in photographs.  Problem tonight was there was hardly anyone about!  I had to watch for the cars to come and set the exposure to 30 seconds to be sure I'd get a few vehicles in the shot.  I suppose that's the problem with living in New Zealand ... there's hardly anybody here ;-)

The last shot was just a bit of fun with the multiple exposure setting on the camera.  I wasn't sure what would happen, but it's not too bad for a first attempt.  Perhaps let me know what you think of the shots in this post?