1. Adjusting Depth-of-Field: A low aperture value produces short depth-of-field, and consequently a larger blurry portion of the image. The shorter the focal length, the greater the depth of field. Another thing to consider is lens-to-focal point distance. A longer distance between the lens and the focal point creates a greater depth-of-field.
2. Choosing the best lens: Apertures which utilize more blades or have curved blades will produce more circular-shaped light bursts in the bokeh, while apertures with more octagonal openings produce a similarly-shaped light burst. Generally, more expensive lenses use more blades and/or utilize curved aperture blades in an effort to produce a more circular bokeh.
3. Creating Custom Bokeh:
People can create special cut-outs in various shapes to go on a lens. The shape of the cut-out will control the shape of the light bursts in the bokeh.
4. Relating the Foreground with the Background
Relating the sharp foreground subject of an image with something in the
blurry portion of the image can create a truly creative image. Trying to maintain a equidistant between the camera and the subject
comparing to the subject and the Background, will logically produce
great results.
http://digital-photography-school.com/how-to-achieve-better-bokeh-4-simple-tips
Other facts that I found:
- Bokeh simply means Blur in Japanese language.
- The Number of Aperture or Shape of the blades defines the Nature of bokeh. For Example: an 8 Blade diaphragm will produce a Polygonal bokeh.
- Back-lit Background works great in producing pleasing Bokeh’s.
- The Larger the aperture better the Bokeh.
Some examples of bokeh:
A 200mm lens was used to take this picture.
(http://121clicks.com/inspirations/15-beautiful-tips-and-examples-of-bokeh-photography)
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