Sony 55mm F1.8 Sonnar T FE ZA Full Frame Prime Lens – Fixed

Description

Sony Camera Lenses SEL55F18Z An all-day battery that
intelligently powers every scroll, click, call, tap, playlist and season
finale you can throw at it. Renowned Carl Zeiss contrast and resolution brings
out the best in α7 series full frame E-mount bodies. The T coating works with
an innovative optical design to suppress internal reflections, for sublime
contrast from highlights to deep blacks. In keeping with the Sonnar concept, a
large F1.8 maximum aperture can produce beautiful full-frame background bokeh,
but you also have the option of stopping down for extended depth-of-field. A
bright lens like this is also an advantage when shooting indoors or outdoors
in low light. Linear motor driven internal focusing is smooth and quiet, and a
dust and moisture resistant design ensures 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. 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.
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 SteadyShot 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 55mm
F1.8 ZA Full-frame E-mount Prime LensRenowned Carl Zeiss contrast and
resolution brings out the best in α7 series full frame E-mount bodies. The T
coating works with an innovative optical design to suppress internal
reflections, for sublime contrast from highlights to deep blacks. In keeping
with the Sonnar concept, a large F1.8 maximum aperture can produce beautiful
full-frame background bokeh, but you also have the option of stopping down for
extended depth-of-field. A bright lens like this is also an advantage when
shooting indoors or outdoors in low light. Linear motor driven internal
focusing is smooth and quiet, and a dust and moisture resistant design ensures
consistently reliable performance. TechnologyCircular ApertureWhen 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 elementsAspherical 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) coatingCoated 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 FeaturesInternal
focusingOnly 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. 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 SteadyShot 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:

• Diaphragm Blades 9, Rounded. Lens Groups / Elements is 5/7
• Focal Length: 55mm, Filter Diameter: 49mm
• Minimum Focus Distance: 19-11/16 inches (.50m)
• Lens Type: Fixed, E-mount Full Frame, Lens not zoomable
• Aperture (Min/Max): 22/1.8; Angle of View (35 mm): 43
• Magnification: 14x; Battery Life (Still Images) Approx. 530 shots (Viewfinder) / approx. 650 shots (LCD monitor) (CIPA standard)

Product Details:

• Brand: Sony
• Focal Length Description: 55mm
• Lens Type: Standard
• Compatible Mountings: Sony E
• Camera Lens Description: 9
• Product Dimensions: 2.8 x 2.52 x 2.52 inches
• Item Weight: 9.9 ounces
• Item model number: SEL55F18Z
• Is Discontinued By Manufacturer: No
• Date First Available: October 15, 2013
• Manufacturer: Sony
• Country of Origin: China