Have you ever wondered how to create a really blurry background with your DSLR camera? Not all of them are created the same. The quality of the blur (also known as bokeh) is a result of three factors:
1) aperture – wider is better.
2) focal length of the lens – longer is better
3) distance from the subject – closer is better
A blurry background is not a technical term but an easy way to remember the technique. In photography terms it is called a shallow depth of field. It is also referred to as selective focus. You can see why in the photo on the left how the blurry background accentuates the crispness and sharpness of the subject. The butterfly is clearly the subject. The settings used in the photograph on the left were: f/4; 1,000 sec; ISO 400 with a Canon 7d DSLR camera.
For more information on DSLR photography check out the online course.
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