Circular Aperture
When changing your aperture to defocus the background, the light sources appear blurred. This 'bokeh' effect of the blurred background can be enhanced with circular aperture blades used in this lens. Conventional aperture blades have flat sides creating unappealing polygonal shaped defocussed points of light. α lenses overcome this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2 stops. Smoother, more natural defocusing can be obtained as a result. |
Extraordinary Defocusing
Due to the STF design of the SAL135F28, the bokeh, or defocusing, on this lens is extraordinarily creamy and unique, going beyond the capabilities of conventional lens technology.
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Manual focus only
Due to the unique characteristics of the STF technology, focusing can only be achieved manually. The effects are well worth the effort.
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