Thanks for the thumbs up Quentin
@varunchauhan: The details of the shot are below the photo, I used my 17-40 lens zoomed all the way out to 17mm so you're right about the ultra-wide part. Judging from the length of the stripes and the fact that at 17mm the lens gives an angle of view of about 90 degrees, I'd say I moved about 4 to 5 degrees during the photo. I really just locked on to them apassing by, and kept following them as the shutter opened. I'm guessing 1/25 might be a sweet spot for fast moving objects though, I'm gonna try and do some more blurred shots at that speed. I think they were about 1,5 meters away from me at the time of shooting, and the centre column of the swing-ride would be about 4 meters away. I've also noticed that some of my other shots, shooting them when they were more to the side of the swing, didn't quite get the feeling of speed at 1/25. I think because you obviously pan a lot less when they are, from my point of view, at the side of the caroussell. Hope this is some use
