I learned this technique from Arthur Morris. He first showed it to me in Florida and I was fascinated by the results. He advised the following: set the lowest ISO; set the aperture between f/16 and f/22; turn off AF and focus manually; an exposure between -1 and -2 stops should look pretty good but there will by necessity be lots of blinkies as the bright spots and starbursts are specular highlights. (this is what I wrote in my blog a while back)
I have since learned that you may need to go to -3 stops if the scene is extremely bright.
Kaustubh Deshpande posted this image . He used an f/ 5.6 which resulted in round specular highlights. If you scroll down you will see his results when he used an f/8 for the same image. They were octagon shaped highlights.
Connie Mier posted this image. She did a great job with the technique. She retained a bit more detail in the image and I like that too.
For this one I added some dark blues to the image. I liked the way it looked but you could leave it B&W.









