Hey Jim, this is what a multiple exposure is supposed to look like.
The difference between these photos and the ones Jim posted is, he used a tri-pod and let the water move. In these shots I moved the camera slightly between each exposure. I also used exposure compensation.
I like the colour and composition on these two , Y , especially the first one . But Orton on steroids is just too much for my mature vision --- or I need new specs !
One thing I see, is that your movements between each shot is not that much. I think when I tried it on the trail, my problem was I used drastic moves...
Jim, You don't have to move the camera much to get this effect. If you move it to much you get to much clutter and not enough detail of what it is a pic of. Moving the camera in different directions also gives you different effects.
Thanks Dan, If your camera is pentax or nikon you should be able to do this.
A starting point for books would be.
Photo Impressionionism and the Subjective Image by: Freeman Patterson and Andre Gallant.
Andre Gallant also has a book called Dreamscapes Exporing Photo Montages. Which might be of interest because you are a canon user and can't do multiple exposures in camera.
There is also a book called Photographing Creative Landscapes, Simple Tools for Artistic Images and Enhanced Creativity by Michael Orton. 2001. This is where the 'Orton' technique came from.
Once you get the basics.....you can study the impressionist painters.....and take it from there with your own style.
William Neill writes for US Outdoor Photography mag.....has some articles on camera movement. He also has a website/blog with photos.
There is no book or website that I have seen that can give you specific shutter speed or how to move your camera for these shots. You have to practice and figure it out. Much easier with digital.
Actually it does work well for filling in white skys on these types of photos. 