The lens on the right with more blades, which are rounded, is generally preferred among photographers. While it may not make much difference to some, most photographers prefer the rounded aperture so that the bokeh appears smooth and circular. In the comparison below, you can see that the rounded aperture makes a shape closer to a circle than the other aperture that forms a pentagon with hard corners.
#3 blade bokeh lens professional#
In less expensive lenses, it is most common to see 6 blades in an aperture, and in more professional lenses it is more common to see 9 blades.Īside from the sheer number of the blades is whether they are placed straight or if they are rounded.
Some lenses have only 5 or 6 blades on the aperture, and other lenses may have 9 or even 14 blades on the aperture. When you start to close your aperture down, however, that’s when the blades come into play. When your lens is shot wide open your bokeh will always be circular since the aperture blades are retracted into the lenses housing. It can be opened wide, or shut down to a small circle. The aperture of your lens is opened and closed mechanically, and operates like the pupil of your eye. The number of blades that make up your lens’ aperture are what makes the difference between pleasing bokeh and poor bokeh. The bokeh, however, can be smooth and non-distracting or crunchy and off-putting. The quality of the out of focus portion of a photo is called bokeh (pronounced bo-cuh). When your subject is isolated from your background like this it gives them pop and significance. That shallow depth of field allows you to shoot photos with sharp subjects and soft, blurred backgrounds. If you shoot at a wide aperture you will have a shallow depth of field. You probably already know that the aperture of your lens affects depth of field. However, that short answer needs (a lot) of clarifying to be totally true. The short answer is that the more blades an aperture has, the better.
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