For those that don’t know:
|Part of Speech:||n|
|Definition:||a Japanese term for the subjective aesthetic quality of out-of-focus areas of a photographic image|
So some of you probably thought that out of focus was just out of focus – but that isn’t the case. The construction makeup of a lens (and other factors – I’ll get into this in a mo) can influence how this “out of focusness” looks.
For the most part it’s not always obvious since many items blur into each other – but where it comes to effect most or when it’s most noticeable is when there’s a single point of light that is small enough but strong enough to be blurred as one unique area.
An example can be found on the Wiki page on Bokeh :
If you really want to get into the technicalities of this dot of light turning into a blurred circle – look up “The Circle of confusion“.
Aaaaanyway – getting to the point – the factors that influence the characteristics of this blur/bokeh are the glass in the lens but more so the shape of the iris within the lens. Not all irises are the same as they will have various numbers of sliding metal plates.
The funky stuff, and the point of this post – is that you can cheat and place something in front of the lens – making a fake iris so to speak. I’ve seen it done a few times but just saw this music video where it’s used to clever effect – keep an eye out on the Circle of confusion turning into a “OH” of confusion or notes, walk sign, stops sign of confusion etc 😉
I originally found this on here : http://www.diyphotography.net/bokeh-masters-kit-used-to-create-boekhlicious-clip
And if you want to play around with this with a ready-made kit they sell one : http://www.bokehmasterskit.com/