I am new to photography and would like some feedback on some night photographs I took. Using Photomatix and my Canon Powershot S3 IS I created the following HDR images. The ones I like best are shown first. 1.An old power plant. I think I could have made it a bit brighter. 2. I don't know what this thing is called. 3. Oncoming traffic. I used a long shutter speed but didn't have a tripod. 4. Sky over football stadium. 5. More traffic. 6. This photo would be great if it didn't have the grain and blur. Any and all feedback is strongly appreciated.