There are special filters that you can buy to create those “star-burst” effects from very bright points of light, but you can also do this by using a small aperture, the aperture rings in the lens will help to produce this same star-burst effect without you going out and buying those filters. Of course, the filters do give some very neat effects 🙂
I had intended this experiment for a night scene, but as I was in the park accompanying Nikhil, I thought I’d try it out using the sun as my source of bright light. (I even took shots with a larger aperture to make sure it was working as it should)
