Sony SELP18105G E PZ 18-105mm F4 G OSS , Black

Description

True to its high-end G Lens heritage, the SELP18105G lens
features two ED glass elements and three aspherical elements for high
resolution and contrast throughout the entire zoom range. The first Sony G
Lens created specifically for E-mount cameras is true to its heritage,
achieving outstanding resolution and contrast throughout the zoom range thanks
to an advanced optical design incorporating two ED glass elements and three
aspherical elements. From wide angle to medium telephoto, this power zoom lens
covers approximately a 6x zoom range with a constant F4 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. 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. 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 SteadyShot are trademarks of Sony.
All other trademarks are trademarks of their respective owners. From the
Manufacturer E PZ 18-105mm F4 G OSS Power Zoom LensThe first Sony G Lens
created specifically for E-mount cameras is true to its heritage, achieving
outstanding resolution and contrast throughout the zoom range thanks to an
advanced optical design incorporating two ED glass elements and three
aspherical elements. From wide angle to medium telephoto, this power zoom lens
covers approximately a 6x zoom range with a constant F4
aperture.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.ED (Extra-low Dispersion) glassAs 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 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.Lens-based optical image stabilizationGyro 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 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.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 SteadyShot are trademarks of Sony. All other trademarks are
trademarks of their respective owners.

Features:

• High performance E mount lens with excellent contrast; Minimum Aperture (F): 22
• Minimum Focus Distance : 1.48 (Wide) 3.12 ft (Tele), Maximum Magnification ratio : 0.11x, Focal Length : 18 105 mm
• Versatile 27 158mm (35mm equiv.) zoom range. Angle of view (APS C): 76 15. Number of aperture blades are 7
• Constant F4 maximum aperture throughout the zoom range. Filter diameter (mm):72 mm
• It is recommended that you use a lens hood to reduce flare and ensure maximum image quality.Focal Length (mm) 11/16 4 1/8 35 mm equivalent focal length (APS C) 1 1/16 6 3/16 inches

Product Details:

• Brand: Sony
• Focal Length Description: f/4.0 OSS PZ Zoom Lens
• Lens Type: Wide Angle, Telephoto
• Compatible Mountings: Sony E
• Camera Lens Description: 7
• Product Dimensions: 4.33 x 3.07 x 3.07 inches
• Item Weight: 15.1 ounces
• Item model number: SELP18105G
• Batteries: 1 Product Specific batteries required.
• Is Discontinued By Manufacturer: No
• Date First Available: August 26, 2013
• Manufacturer: Sony
• Language: English