@ John: Thank you for your comment! You will find the information by clicking on the Photo Info on the right side of the photos. For most intentionally blurred pictures here and in other gallery I found speed between 0.3 to 1 sec. useful (most of the time about 0.5 sec.). The aperture is then adjusted to get the exposure I want. I would like lower ISO-numbers on the 40D (lowest is 200 ISO).
on Jul 11
These photos are terrific. What aperture and speed did you use?