Sony FE 28mm F2.0 Lens

Sony FE 28mm F2.0 Lens

The Sony 28mm F2.0 FE Lens is a full-frame compatible wide-angle prime lens for E-Mount mirrorless cameras. Its wide focal length and fast aperture make it a practical and versatile addition to your gear bag. Also compatible with APS-C format E-Mount cameras, it provides the angle-of-view equivalent to a 42mm lens in the 35mm/full-frame format.

Its optical design features Extra-low Dispersion glass elements which reduce chromatic aberrations and provide improved contrast. Also, aspherical and advanced aspherical elements minimize spherical aberrations and help to maintain the lens’ compact, lightweight form. Multi-coating on the ED glass elements reduce flare and ghosting and also improve overall image contrast and quality.

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.
	ED (Extra-low Dispersion) glass / Super ED glass As focal lengths get longer, lenses built with conventional optical glass have difficulties with chromatic aberration, and as a result images suffer from lower contrast, lower color quality, and lower resolution. ED glass dramatically reduces chromatic aberration at telephoto ranges, and provides superior contrast across the entire image, even at large aperture settings. Super ED glass provides enhanced compensation for chromatic aberration.
Internal focusing Only the middle groups of the optical system move to achieve focus, so the overall length of the lens does not change. Other important benefits include fast autofocusing and a short minimum focusing distance. Also, the filter thread at the front of the lens does not rotate, which is convenient if you’re using a polarizing filter.	Aspherical lens elements Aspherical lens design dramatically reduces spherical aberration while also reducing lens size and weight. Spherical aberration is a slight misalignment of the light rays projected on the image plane. This is caused by differences in refraction at different points on conventional spherical lenses which degrade image quality in large-aperture lenses. Specially shaped “aspherical” elements near the diaphragm restore alignment of light rays at the image plane, maintaining high sharpness and contrast even at maximum aperture and can also be used at other points in the optical path to reduce distortion. Well-designed aspherical elements can reduce the total number of elements required in the lens, thus reducing overall size and weight.