Product Description
FE 28mm F2 E-mount Prime Lens
An excellent choice as a second lens, this full-frame 28mm wide-angle prime
features a bright F2 maximum aperture and outstanding overall optical
performance. Advanced optics and coatings with a 9-blade circular aperture
deliver beautiful images. Internal focusing on a fast and quite linear actuator
makes this lens ideal for both still and movie.
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.
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.
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 youre using a
polarizing filter.
Go even wider or fisheye with converters
For even wider perspectives an optional Ultra-wide Converter (SEL075UWC) and
Fisheye Converter (SEL057FEC) can be added to increase the angle of view to 21mm
wide-angle or 16mm fisheye with full 180 coverage, respectively. Corresponding
EXIF data is generated when these converters are attached to the lens, making
data management easy.
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