Bokeh Mode : A new technology in photography

Hello Friends,

While watching IPL I saw the advt of Amir Khan , in which he was telling the the technology of Bokeh Mode which comes in Vivo9 Phone.

No wonder the advt. is so wonderfully showed So for enthusiasm i search the word Bokeh Mode.
So  after reading lots of articles I find out following things.

Bokeh is the quality of out-of-focus or “blurry” parts of the image rendered by a camera lens – it is NOT the blur itself or the amount of blur in the foreground or the background of a subject.

The blur that you are so used to seeing in photography that separates a subject from the background is the result of shallow “depth of field” and is generally simply called “background blur”. The quality and feel of the background/foreground blur and reflected points of light.

Bokeh is rendered by the lens, not the camera.
 Different lenses render bokeh differently due to unique optical designs.
Generally, portrait and telephoto lenses with large maximum apertures yield more pleasant-looking bokeh than cheaper consumer zoom lenses.

For example, the Nikon 85mm f/1.4D lens produces exceptionally good-looking bokeh, while the Nikon 18-135mm f/3.5-5.6G DX lens produces poor bokeh at the same focal length and aperture – all due to differences in optical designs of both lenses.
Again, I am not just talking about the background blur; all lenses are capable of producing out of focus blur, but not all lenses are capable of rendering beautiful bokeh.

So, what is a good or beautiful bokeh? A good bokeh pleases our eyes and our perception of the image and therefore, the background blur should appear soft and “creamy”, with smooth round circles of light and no hard edges.

How about bad or ugly bokeh? Although a lot of people argue that there is no such thing as a bad bokeh, I still call whatever distracts my eyes “bad”

Open up the larger version of the above image and see for yourself – the quality of the blur is not pleasant to the eye, with sharp edges of the circles and double lines.

how do you get a good bokeh in your images? As I have pointed out above, bokeh depends on the type of lens you are using. While lower-end consumer zoom lenses will yield unpleasant bokeh, fixed (prime) lenses and most professional zoom lenses with fast apertures yield good-looking bokeh.

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