Here's an image I did some while ago, when I first tested the "Merge to HDR" function of PS CS2. The resolution is reduced for posting:
Click here. (Comprised of seven images from 2 stops below to 2 stops above)
The same image, taken using the auto settings on my Canon 20D, can be seen here
Click here.
Most tutorials I've seen only go through the actual merge to HDR process, however I find that some degree of tweaking afterwards is necessary to get the tones for each colour correct, and to make the image more balanced. I almost always run through the following steps afterwards:
1. Duplicate the window and convert to lab, then select the lightness channel on the duplicate.
2. Redistribute contrast with the Shadow/Highlight tool and stretch it into the midtones further. Keep an eye on the histogram before and after this step.
3. Perform a curves adjustment on just the shadows so we can deepen them a bit without losing detail in the overhead light fixtures.
4. Sharpen as required using smart sharpen or using a mask to highlight the edges of the image.
(Thanks to Kevin F for his help with this.)
Doing this to the above image produces this:
Click here.
I actually think I went a bit too far with the darkening of the shadows in this one, but the principle is sound. I also haven't gone into detail about the adjustments in the steps above, so if anyone wants me to, or would like some screenshots then PM me.
Out of curiosity I tried using the merge to HDR function on some random images, one of which was the photo used above. You can get some interesting effects, but you need to choose your images carefully (using the exif data) to ensure that you have the necessary tonal range for the HDR process or PS CS2 will not allow you to continue with the merge. The result I got from this is
here.
I love HDR images, and have always rated the Cambridge in Colour site as one of my favourites. His techniques are excellent as are the images.
Posted in case the above ramblings help with anyone's HDR process flow. IMO time consuming, but very worth while results, especially night scapes involving lighting.
David.