Number of Diaphragm

What is Number of Diaphragm?

The number of diaphragm blades in a camera lens refers to the number of blades that make up the aperture mechanism.

The diaphragm blades control the size and shape of the aperture and thus the amount of light that enters the lens. Lenses with more diaphragm blades tend to produce more circular and pleasing bokeh, which refers to the aesthetic quality of the out-of-focus areas in an image. The number of diaphragm blades can vary from lens to lens, with some lenses having as few as five or six blades and others having up to fifteen or more. The number of diaphragm blades is just one factor that affects the overall performance of a lens, and other aspects such as the quality of the glass, the coating, and the design also play a crucial role.

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