E 18-55mm F3.5-5.6 OSS E-mount Zoom Lens

E 18-55mm F3.5-5.6 OSS E-mount Zoom Lens

This 27mm wide angle to 82.5mm medium telephoto equivalent (35mm full frame format) range in a compact 3x E-mount zoom that is suitable for landscapes, snapshots, portraits, and more. Built-in Optical SteadyShot (OSS) provides approximately a four-stop image stabilization advantage, and an internal drive motor ensures smooth, quiet autofocus and aperture operation. E 18-55mm F3.5-5.6 OSS E-mount Zoom Lens

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Features

Circular Aperture

Circular 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.

Aspherical lens elements

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.
Aspherical lens elements
Distance encoder

Distance encoder

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.

Lens-based optical image stabilization

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.
Lens-based optical image stabilization

Internal focusing

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.

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Specifications

Optics/Lens
Lens Mount Type Sony E-mount
Lens Stabilization Optical SteadyShot
Aperture Circular
Aperture (Max.) f/3.5 - 5.6
Aperture (Min.) f/22 - 32
Focal Length (35mm equivalent) 18-55mm (35mm)
27-82.5mm (APS-C)
Filter Diameter 49mm
Lens Construction Metal
Lens Groups-Elements 9 groups, 11 elements
AF for Movie Capture Yes
Minimum Focus Distance 6.83"
0.25m
Angle of View 76° - 29°
Aperture Blade 7 blades (Circular aperture)
Aspheric Elements 4 aspheric surfaces
Direct Manual Focus Yes
Exterior Finish Metal
Focus Ring in AF Mode No rotation
Internal Motor Yes (Stepping motor)
Lens Weight 6.9 oz (194g)
Low Noise During Movie Capture Excellent
Maximum Magnification 0.3x (APS-C)
Mount Material Metal
Non-rotating Focusing Ring No rotation
Weights and Measurements
Dimensions (Approx.) 2-1/2" x 2-3/8"
(62 x 60mm)
Weight (Approx.) 6.9 oz (194g)
Service and Warranty Information
Limited Warranty Term 1 Year Parts & Labor
SteadyShot INSIDE (image stabilization)
Compensation effect 4
Compensation effect 4

What's in the Box

  • Front and rear lens cap
  • ALC-SH112 bayonet type lens hood (petal)

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