- Carl Zeiss mid-range zoom lens; Compatible with E- Full Frame cameras and E- APS-C cameras.
- Minimum Focus Distance : 1.15 feet (0.35 m), Maximum Magnification ratio : 0.23x, Focal Length : 16-70 mm.
- High lens technology in a compact body. Filter Diameter (mm) - 55 mm.
- Optical Steady image stabilization. Zeiss T anti-reflective coating.
- When using a flash, always remove the lens hood and shoot at least 1 m (3.3 feet) away from your subject. Angle of View (APS-C): 83°-23°.
Product Description
-------------------
Outstanding contrast and resolution throughout the image area at
all zoom settings are the hallmark of this high-performance Carl
Zeiss mid-range zoom lens The latest advances in optical design
technology have made it possible to deliver prized Carl Zeiss
contrast and clarity in a high-performance mid-range zoom. Four
aspherical elements combine with one ED glass element to bring
you breathtaking rendering. 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. 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 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.
Coated optics were pioneered by Carl Zeiss - and this superb lens
features the Carl Zeiss T* (T-Star) coating that virtually
eliminates lens flare, internal reflection and light scattering
that can otherwise occur at glass-to-air surfaces. The T* coating
contributes to outstanding image quality, with high contrast and
uniformly excellent resolution right out to the image edges. Not
simply applied to any lens - the T* symbol only appears on
multi-element lenses in which the required performance has been
achieved throughout the entire optical path, therefore
guaranteeing the highest quality. 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. 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. 2013 Sony Electronics All rights reserved. Reproduction
in 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, Alpha, (a) and
Super Steady are trademarks of Sony. All other trademarks are
trademarks of their respective owners.
From the Manufacturer
---------------------
Vario-Tessar T* E 16-70mm F4 ZA OSS Lens
----------------------------------------
The latest advances in optical design technology have made it
possible to deliver prized Carl Zeiss contrast and clarity in a
high-performance mid-range zoom. Four aspherical elements combine
with one ED glass element to bring you breathtaking rendering.
Technology
----------
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
-------------------------------
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.
Carl Zeiss T* (T-star) coating
------------------------------
Coated optics were pioneered by Carl Zeiss - and this superb lens
features the Carl Zeiss T* (T-Star) coating that virtually
eliminates lens flare, internal reflection and light scattering
that can otherwise occur at glass-to-air surfaces. The T* coating
contributes to outstanding image quality, with high contrast and
uniformly excellent resolution right out to the image edges. Not
simply applied to any lens - the T* symbol only appears on
multi-element lenses in which the required performance has been
achieved throughout the entire optical path, therefore
guaranteeing the highest quality.
Lens-based optical image stabilization
--------------------------------------
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
-------------------
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.
2013 Sony Electronics Inc. All rights reserved. Reproduction in
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, Alpha, (a) and Super
Steady are trademarks of Sony. All other trademarks are
trademarks of their respective owners.