If you want to capture this shot with shallow depth of field, (aka, bokeh), that's Japanese wording for depth of field (DOF). I suggest a long lens. I used a 100mm for this and allowed the aperture, f-stop to be 2.8, ISO settings means nothing here.
What this need is the f-2.8 (aperture or f-stop), and a >50 mm rangeto limit the DOF (blurring the background) so that the foreground is sharp and noticeable.
I tried this on a dslr and then used a compact camera to repeat the feat. I did not want to upload the compact camera result because it is rubbish.
Compacts have small sensors (photo-sensors) and thus all (photos) are very detailed. you need to focus on a subject and the bluring will be the object far away, (approx, 50m) to achieve bokeh. Even at f2.8.
I normally tell my friends to blur these via post processing. Yeah, it looks bad but you cannot win them all. If you really want great bokeh, then you need to isolate (around 50m) the subject from the foreground. The lantern shots like above is difficult, if not impossible to achieve.
Using compact, another good way to isolate is using a soft-filter (55mm thread), take two shot one with the soft filter and one without, then in post processing merge one onto another and erase to make it sharp or blur depending on which layer was on top.
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