I have seen on this forum a picture of a small waterfall that had a slow shutter speed and the water had an amazing soft blur. Is this something that is done in photoshop? I was just sitting out front with my camera. Watching cars go down US41 and I wanted to try to get a blur of something zipping by and couldnt get anything but a white screen. I put a circular polarizer on the lens and still nothing.
Sorry I am really new to this whole thing. I am shooting with an xsi. I had the nifty fifty on it. I tried moving my f stop as large as 1.8 and as small as 22. I set my iso to 100 and no matter what if my shutter speed wasnt at least 1/250 it was almost a complete white screen.

