D4S since that's ideal only for seasoned photographers who create their dwelling from pressing photos. Depending on how dim the back ground is (darker often = better) you might have to dial in some exposure compensation to truly get your bokeh to actually place. Next, try putting a subject How to bokeh with a kit lens of some type before the camera at least focus length (or there about) using the bokeh highlights while in the background. It will take a minor playing around with material and illumination (both foreground and background) in almost no time you ought to be shooting bokeh just like a master!
For your novice, the aperture could be the opening while in the lens that controls light's quantity that makes it through shutter and the contact for the movie/indicator. Fast lenses below f/2.8 like my 20-year old manual-focus Pentax-A 50mm f/1.7 SMC are well suited for shooting bokeh (and it is the lens I use for many of my bokeh pictures on Fickr). I have found that the smaller the emphasis distance for the front topic, the greater the backdrop bokeh I will get.
Without changing any camera settings between pictures, Capture several structures from a simple vantage position. You'll note that the effect includes a comfortable, confused history that would not be possible from the single shot using the kit contact. Most kit contacts have relatively short key lengths, when properly mounted on a camera, they truly are not the best alternative for any kind of up-close and personalized photography. But it's possible by altering the way in which in which you utilize it, to completely change your contact.