one of my colleagues, greg pierce, raised the following question about a recent photo shown below.
"I remember seeing a video tutorial on how to get that perfect blur from someone riding past you on a bike. It was on open source I think. Do you remember anything like that Kevin or care to share your technique for getting that shot?"
i'd be happy to! i just tried typing this in prose and it took forever and was really confusing...so we'll go with numbered steps.
1) camera in shutter priority mode; you want to control your shutter speed
2) camera in multishot drive mode; you'll want to just hold the shutter release down for many shots hoping for the perfect one. ;)
3) choose appropriate shutter speed; i start with 1/10th of a second and adjust from there, the key is to blur the background, but not beyond recognition. increase the shutter speed if you find the background completely blurred away
4) if your background is far away, make sure your aperture is closed down enough to keep good depth of field. even if your shutter speed is right, the background may be too blurry simply due to shallow depth of field. an increase in iso may be needed so you can close down your aperture to bring definition back into your background blur.
5) prefocus on the area the subject will be moving through; you'll want to take your eyes away from the viewfinder a bit so you can do what's explained next
5) shoot with both eyes open and don't bother looking through the camera; you can't see through it during the exposure anyway and you need to keep the subject in the same spot of the frame. i pick a spot on the subject and make sure the end of my lens is always in line with that point.
good luck and have fun!
i posted the bike photo in question below (shot at 1/13th of a second) along with another blurred motion shot. the fountain shot is a lot easier since it only requires steps 1-3 above. it's shot at 1/10th of a second.











