This image and the two other abstracts shown in a previous story were constructed by allowing strong sunlight to pass through bottles filled with fluid (dark brown maple syrup and red wine). In the foreground I placed glassware (a wine cup stem in this image, flower vases in the previous two). A water glass made of blue glass added some reflected color to the images.
I photographing the setup extremely close with a very low depth-of-field, hand holding a Lensbaby Sweet 85 wide open (at f/1.8) with an extension tube, and using short duration shutter speeds (e.g., 1/2000 of a second). The result was extremely shallow focus and a painterly effect for everything out of focus, and clearly the precise point of focus was a crucial issue. I do think this would have been hard to pull off without an optical viewfinder.