Product Description
-------------------
Sony Camera Lenses SEL35F28Z The small size, versatile 35mm
focal length, and outstanding overall performance of this Carl
Zeiss Sonnar T* lens make it an ideal match for compact 35mm full
frame format E- bodies. Although the optical design is
state-of-the-art, this superb wide angle lens remains true to the
original Sonnar concept with a bright F2.8 maximum aperture
(“Sonne” means “sun” in German). Three double-sided aspherical
elements minimize aberration so that stunning contrast and
resolution are maintained right out to the image edges at all
apertures. The renowned T* lens coating contributes to natural
color reproduction as well. 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. 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. 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. The dust and
moisture resistance design makes this lens appropriate for
heavy-duty outdoor use, especially when combined with a camera
that employs weather resistant measures. 2014 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) logo, and Steady are
trademarks of Sony. Carl ZEISS and ZEISS is a trademark of Carl
Zeiss and Sony Corporation. All other trademarks are trademarks
of their respective owners.
From the Manufacturer
---------------------
Sonnar T* FE 35mm F2.8 ZA Full-frame E- Prime Lens
-------------------------------------------------------
The small size, versatile 35mm focal length, and outstanding
overall performance of this Carl Zeiss Sonnar T* lens make it an
ideal match for compact 35mm full frame format E- bodies.
Although the optical design is state-of-the-art, this superb wide
angle lens remains true to the original Sonnar concept with a
bright F2.8 maximum aperture (“Sonne” means “sun” in German).
Three double-sided aspherical elements minimize aberration so
that stunning contrast and resolution are maintained right out to
the image edges at all apertures. The renowned T* lens coating
contributes to natural color reproduction as well.
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.
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.
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.
Dust and Moisture Resistant
---------------------------
The dust and moisture resistance design makes this lens
appropriate for heavy-duty outdoor use, especially when combined
with a camera that employs weather resistant measures.
2014 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) logo, and
Steady are trademarks of Sony. Carl ZEISS and ZEISS is a
trademark of Carl Zeiss and Sony Corporation. All other
trademarks are trademarks of their respective owners.
- Features a bright maximum aperture of F2.8, compact dimensions and outstanding optical performance in a versatile 35mm focal length; Minimum Aperture (F): 22.
- Minimum Focus Distance : 1.15 ft (0.35 m), Maximum Magnification ratio : 0.12x.
- Carl Zeiss E- full-frame lens for Alpha a7 Series full frame camera bodies.Lens groups / elements-5/7.
- Dust and moisture resistant design. Filter diameter- 49 mm. Angle of view- 44º (APS-C)63º (35 mm Full Frame). 35 mm equivalent focal length (APS-C)" and "Angle of View (APS-C)" are with interchangeable lens digital camera incorporating APS-C type image sensors.
- Lens not Zoomable.