Bokeh in the background with a 50 mm lens. What am I doing wrong?

Started Apr 22, 2013 | Questions thread
Olaf Ulrich
Contributing MemberPosts: 942
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Re: Background blur with a 50 mm lens. What am I doing wrong?
In reply to scorrpio, Apr 22, 2013

scorrpio wrote:

Olaf Ulrich wrote:
Oh please! Don't try to suggest all this bunkum to a beginner photographer. He might start thinking it was true ...

Well, it IS true. Bokeh depends on the number of aperture blades, their shape, and their edge profile.

Lens manufacturers' advertisings try to suggest that, and you're falling for it.

A lens' out-of-focus rendition depends on so many factors ... and the aperture shape is, well, not entirely insignificant but one of the least important ones. Stopped down to f/2.2 or f/2.5, the EF 50 mm 1:1.8's bokeh is just fine, thank you. Thinking that bokeh improves with the number of aperture blades or price of the lens is a major yet common misconception. As a matter of fact, it often (not always) is the cheapest lenses which have the nicest bokehs.

Besides ... a particularly harsh out-of-focus rendition definitely was not, repeat: NOT the original poster's problem. To the contrary—parts of the image were too soft for his taste.

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