jdando wrote in post #10468157
After bumping into the "parallax effect" while doing some panning shots a few weeks ago click here
I am thinking is the effect of blurring at the front/rear of the car increased because the car is not traveling at a constant speed? Or is it more of a factor of just not panning at the speed of the car?
The longer the lens and the higher the shutter speed the lesser the effect.
You HAVE to pan smoothly with the car, but, the car will change it's shape in the frame DURING THE EXPOSURE, hence the effect you see. Think about a 1, 3 or 5 second pan exposure and how the car will change it's shape in the frame during that time. The same thing happens at 1/60th, just to a lesser extent. If you are panning smoothly with the front of the car then the effect is potentially lessened there but it still exists else where in the frame. Or maybe the driver is sharp and the front or rear of the car are fuzzy, that's due to how well you've tracked the car with your panning (clearly you've kept the driver in the same part of the frame during your pan/exposure in this example).
You see it much less with longer lenses as the cars shape changes much less during the exposure.