I haven't post anything here in a long time largely because I've begun writing a new book and so have been spending a lot of time doing research. Also, July was so godawful hot here in New England that I couldn't work in my office (which has no a/c). I have been shooting a little, mostly experimenting with different creative techniques. The shot here is the result of an in-camera triple exposure of several different bottles and a blue wine glass (shot in natural light on my back porch). The multiple exposures are pretty simple on my Nikon D90--you just set it to the multiple-exposure mode (in the menus) and then tell it how many exposures you're going to make. The camera automatically adjusts the exposure based on the number of exposures you're using to make one frame.
In the old days (film) you had to trick the camera into making in-camera multiples by pressing in the film rewind button so that the film didn't advance when you cocked the shutter and you had to be bery careful to keep the tension on the film tight or it shifted slightly and you ended up with overlapping frame. Using digital cameras to make multis is certainly world's easier! All that I did between exposures was to change the composition or zoom the lens or slightly shift my angle of view. This shot is pretty much right out of the camera--that green background color is just the green of my backyard. See if your camera has the mode, it's a blast.