I recently purchased an e-version of Bill Neill's 'Impressions of Light' and was inspired to experiment a bit with this technique. I must say, I'm having some fun with this. All are single exposures with no Photoshop effects. Here are a few from a recent shoot.
The 1st one below is titled 'River Flow', the 2nd 'Tree Stumps' and the 3rd is 'Blue Stalks'.