Sony Alpha SLT-A77V Specificaties - Pagina 10
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Zoom Lenses
The advent of the digital age—both in terms of photography
itself and the tools used for optical design—has made high-
performance zoom lenses more accessible and easier to
use than ever before. Not only are zoom lenses a great way
to be ready for any photo opportunity, but the freedom to
rapidly change framing and composition without having
to change the camera position offers creative flexibility
that is just too appealing to ignore. In many situations, that
speed and freedom can be the key to grabbing shots that
would otherwise be missed. Advanced Sony design and
manufacturing technology delivers outstanding image
quality with unparalleled zoom versatility and convenience.
Wide-angle zoom
DT 11–18mm F4.5–5.6 SAL1118
One ED glass element and three aspherical elements for superior image quality
High contrast throughout zoom range
Flare and aberrations effectively subdued
Circular aperture for attractive defocusing
35mm equivalent focal length: 16.5–27mm
Aspherical lens
ED glass
At 11 mm
At 18 mm
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This lens fits squarely in the "wide zoom" category, offering a range of
focal lengths that are indispensable for serious indoor and architectural
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photography as well as any other situation that demands wide-angle
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coverage. City scenes, crowded markets, historical ruins... all of these are
subjects that can benefit from the wide perspectives this lens provides.
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It's also a great lens for shooting dynamic images with deep perspective.
Although wide angles present more opportunities for image-degrading
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lens flare, the SAL1118 features special elements and design that reduce
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12
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flare and aberrations to a minimum for crisp, high-contrast images even
Distance from optical center
Distance from optical center
under difficult conditions.
of lens (mm)
of lens (mm)
• Weight (approx): 360 g
Max. aperture
F8 aperture
Spatial frequency
• Dimensions (Dia. x L): 83 x 80.5 mm
R
T
R
T
• Max. magnification ratio: 0.125x
10 line pairs/mm
30 line pairs/mm
R: Radial values T: Tangential values
M mode, 1/1250 sec., F8, ISO 200, Auto white balance; Photo: Goh Fujimaki
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