- Outstanding performance in an affordable full-frame zoom that is lightweight and compact.
- Maximum magnification ratio (x): 0.19x.Three a spherical elements and one ED glass element contribute to beautiful rendering with minimum aberration.
- Built-in Optical Steady image stabilization ensures clearer, sharper handheld s;Aperture Blades : 7.
Product Description
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This affordable high-performance zoom lens is not only compact
and lightweight, but it has been specifically designed to bring
out the best in the a7-series full-frame E- bodies as well.
The zoom range extends from 28mm through 70mm, providing easy
access to the most frequently used angles of view, and thanks to
an advanced optical design the change in overall lens length
during zooming is minimal
From the Manufacturer
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FE 28-70mm F3.5-5.6 OSS Full-frame Zoom Lens
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This affordable mid-range zoom lens for 35mm full frame format
cameras combines high optical performance with compact,
lightweight convenience. The FE 28-70mm is ideal for a wide range
of subjects, and is dust and moisture resistant for consistent
reliability. Optical Steady image stabilization included.
Technology
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Circular Aperture
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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
-------------------------------
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. Advanced Aspherical
(AA) elements are an evolved variant, featuring an extremely high
thickness ratio between the center and periphery. AA elements are
exceedingly difficult to produce, relying on the most advanced
molding technology to consistently and precisely achieve the
required shape and surface accuracy, resulting in significantly
improved image accuracy and quality.
Lens-based optical image stabilization
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Gyro sensors built into the lens detect even the slightest
movement, and the stabilization lens is precisely shifted to
counteract any image blur that might occur. The use of precision,
quiet linear motors and technology inherited from high-end Sony
professional camcorders results in exceptionally quiet, effective
image stabilization that contributes to high-quality movies as
well as stills.
Additional Features
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Internal focusing
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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.
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whole or in part without written permission is prohibited. Sony
is not responsible for typographical and photographic errors.
Features and specifications are subject to change without notice.
All rights reserved. Sony, the Sony logo, (a) and Super
Steady are trademarks of Sony. All other trademarks are
trademarks of their respective owners.