With a constant maximum aperture of F4, you can use fast shutter speeds without raising ISO sensitivity unnecessarily. Enjoy greater creative control because the F4 maximum aperture remains unchanged even when zooming, you can adjust depth of field more freely
When shooting hand-held, particularly night scenes or dimly lit interiors, Optical SteadyShot enables detailed, blur-free results.
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 results in exceptionally quiet, effective image stabilization that contributes to high-quality movies as well as stills.
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 Elements
Aspherical lens design dramatically reduces spherical aberration while also reducing lens size and weight. 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.
The distance encoder plays an integral part in ADI flash metering, which delivers high precision flash metering that is unaffected by the reflectance of subjects or backgrounds. The distance encoder is a lens component that directly detects the position of the focusing mechanism, and sends a signal to the CPU in order to measure distance to the subject. During flash photography, this data is very useful in calculating how much flash output is appropriate to the scene.
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 defocused points of light. Sony 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.
- Focal Length: 10-18mm
- Aperture Range: f/4.0-22
- Sony E-mount
- Format: APS-C
- Optical SteadyShot image stabilization
- Super extra-low dispersion glass
- Three aspherical elements
- Super wide-angle zoom lens
- Internal Focusing system
- 7-blade circular aperture
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