D4S because that's appropriate only from pressing images, for professional photographers who make their living. Based on how black the back ground is (richer typically = better) you might have to dial in some exposure compensation to get your bokeh to essentially place. Next, try placing a subject How to bokeh with a kit lens of some type facing the camera at least target range (or there about) with the bokeh highlights while in the background. It will have a minor playing around with material and illumination (both front and history) in no time you should be capturing bokeh just like a master!
For the novice, the aperture could be the starting in the lens that regulates the total amount of lighting which makes it through the lens and shutter towards the movie/indicator. Rapid lenses below f/2.8 like my 20-year old manual-focus Pentax-A 50mm f/1.7 SMC are ideal for filming bokeh (and it is the contact I personally use for many of my bokeh images on Fickr). I've unearthed that the quicker the target distance towards the front matter, the greater the background bokeh I'll get.
Without altering any camera settings between pictures Throw several frames from the simple vantage position. You'll see that the end result includes a delicate, fuzzy history that could not be feasible from a singleshot using the kit contact. Many package lenses have relatively brief key programs, so when appropriately mounted on a camera, they are not the best option for any sort-of private photography and close up. But possibly by simply transforming the way in which it is used by you, to totally transform your contact.