- About this item.
- 70-300mm F4.5-5.6 G SSM II Fixed Zoom Lens for Sony Alpha Cameras New Nano AR Coating with nano-precision structure High-performance AF with enhanced object-tracking 105-450mm (35mm equivalent) w. APS-C format cameras Two Extra-Low Dispersion (ED) glass elements 0.25x maximum magnification Smooth manual focusing with easy-grip ring Internal focus design for fast response Circular aperture for smooth defocus effects Supplied carrying case and petal shaped lens hood Show more.
Product Description
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To Be Announced
From the Manufacturer
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70–300 mm F4.5–5.6 G SSM II Telephoto zoom lens
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An advanced optical design with Sony’s original Nano AR Coating
technology effectively suppresses reflections for notably
enhanced overall image quality and minimized aberration as well
as high contrast for excellent resolution throughout the zoom
range. AF tracking is approximately 4x faster than the previous
model, and a new dust and moisture resistant design maximizes
reliability. An excellent choice for outdoor sports and wildlife,
while a 4 foot (1.2 meter) minimum focus makes it useful for
portraits and flowers as well.
Technology
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ED (Extra-low Dispersion) glass / Super ED glass
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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. To counter such problems, ED glass was
developed and is included in select lenses. It dramatically
improves 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.
SSM (Super Sonic wave Motor)
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SSM is a piezoelectric motor that contributes to smooth and
silent AF operation. The motor produces high torque at slow
rotation, and provides immediate start and stop responses. It is
also extremely quiet, which helps keep autofocusing silent.
Lenses that feature SSM also include a position-sensitive
detector to directly detect the a of lens rotation, a factor
that improves AF precision overall.
Circular aperture
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In general, if an aperture uses 7 or 9 aperture blades, then the
shape of the aperture becomes a 7-sided or 9-sided polygon as the
aperture is made smaller. However, this has a certain undesirable
effect in that the defocusing of point light sources appears
polygonal and not circular. 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.
Focus hold button
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Once you’ve adjusted focus to where you want it, pressing this
button on the lens barrel will keep the lens locked to that
focusing distance. The preview function can also be assigned to
this button through the camera’s custom settings.
Focus range limiter
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This function allows you to set a limit on the focusing range
which can save you time during auto focus operation - as the lens
will not ‘hunt’ through the entire focusing range. In macro
lenses, this limit can be on either the near or far range.
Certain lenses set the limit on far ranges only, while others can
be set either to a far range or to a range that you specify
yourself.
Nano AR Coating
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Original Sony Nano AR Coating technology produces a lens coating
that features a precisely defined regular nano-structure that
allows accurate light transmission while effectively suppressing
reflections that can cause flare and ghosting. The reflection
suppression characteristics of the Nano AR Coating are superior
to conventional anti-reflective coatings, including coatings that
use an irregular nano-structure, providing a notable improvement
in clarity, contrast, and overall image quality.
Additional Features
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ADI flash metering
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Advanced Distance Integration provides precise distance
information through the lens distance encoder to the built-in
flash, or certain Sony external flashes (HVL-F60M, HVL-F43AM,
HVL-F32M, HVL-F20M). ADI provides automatic metering that is
virtually unaffected by reflectance or overly dark subjects or
backgrounds, yeilding a more reliable exposure from the flash.
2014 Sony Electronics, Inc.
All rights reserved. Sony, the Sony logo, Alpha, “α” and
Super Steady are trademarks of Sony. All other trademarks are
trademarks of their respective owners.