- Angle of view (35mm): 84°-34° ; E- Lenses.
- Minimum aperture (F): F22.
- Minimum Focus Distance : 1.32 ft (0.4 m), Maximum Magnification ratio : 0.20x, 7 aperture blades.
- Focal Length: 24mm - 70mm ; Focal Length (35mm) (APS-C) : 36-105mm.
- Maximum aperture (F): f/4.
- NOTE: User manual is attached - kindly refer it.
- ZEISS T anti-reflective coating minimises flare.
Product Description
-------------------
Sony Camera Lenses SEL2470ZB This compact full-frame Carl Zeiss
mid-range zoom lens covers a 24mm to 70mm range with a constant
maximum aperture of F4, enabling consistent exposure settings at
any focal length. This premium lens delivers superlative image
quality with full-frame and APS-C E- cameras, and
dust/moisture resistance means consistently reliable performance.
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, (a) and Super Steady are
trademarks of Sony. All other trademarks are trademarks of their
respective owners.
From the Manufacturer
---------------------
Vario-Tessar T* FE 24-70mm F4 ZA OSS Full-frame Zoom Lens
---------------------------------------------------------
This compact full-frame Carl Zeiss mid-range zoom lens covers a
24mm to 70mm range with a constant maximum aperture of F4,
enabling consistent exposure settings at any focal length. This
premium lens delivers superlative image quality with full-frame
and APS-C E- cameras, and dust/moisture resistance means
consistently reliable performance.
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, (a) and Super
Steady are trademarks of Sony. All other trademarks are
trademarks of their respective owners.