The easiest to use and the best choice for novice photographers.
Pros & Cons:
Picturenaut is the easiest to use of the group. The interface is straight forwards and easy to use and yielded decent results using default settings. It would be a good choice for those who do not want to get into the bowels of a software product when making an HDR image.
Picturenaut had problems with the alignment of the handheld images, so do use a camera support (which you should anyway...) Picturenaut also does not offer as many different algorithms to chose from so tweaking for perfection is not always a potential. I had my best results with Adaptive Logarithmic. The documentation on the website was a nice resource for HDR in general.
Picturenaut supports popular file formats including RAW. Because of the simplicity, it is the best choice for the novice photographer.
Picturenaut was reviewed by Gizmos Freeware on based on version 3.2.