Soft focus
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In photography, soft focus occurs when a camera lens forms images that are blurred due to uncorrected spherical aberration. A soft focus lens deliberately introduces spherical aberration which blurs f
An image of a bottle with a heavy soft focus effect.
An image of the same bottle, but without soft focus.
Vest Pocket Kodak with 2-element meniscus lens and integral hood
Imagon fitted with f/7.7-equivalent sieve aperture.
Bokeh
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In photography, bokeh is the aesthetic quality of the blur produced in out-of-focus parts of an image, whether foreground or background or both. It is created by using a wide aperture lens.
Coarse bokeh on a photo shot with an 85 mm lens and 70 mm entrance pupil diameter, which corresponds to f/1.2
An example of a portrait photo (of Katherine Maher). Note the 'swirly' bokeh.
How the bokeh varies with the aperture.
An extremely shallow depth of field, a common effect in macrophotography, emphasizes bokeh.