Full-frame E-mount Fast Prime Lens

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Full-frame E-mount Fast Prime Lens

This 50mm Full-frame E-mount Fast Prime Lens offers a focal length that is perfect for portraiture and a range of other subjects. A bright F1.8 maximum aperture, 7-blade circular aperture and aspherical element deliver impressive image quality with beautifully defocussed background bokeh, all in a surprisingly compact and lightweight package
Full-frame E-mount Fast Prime Lens

Smooth defocusing

The F1.8 maximum aperture opens up a world of beautiful prime-lens bokeh. The large F1.8 maximum aperture is also an advantage when shooting night scenes or in dimly lit interiors. When used with an α series camera body that features in-body image stabilization, even greater low-light capability enables handheld capture of clear images in dark scenes without having to use excessively high ISO sensitivity.

7-blade circular aperture

The 7-blade circular aperture maximizes the beauty of large-aperture prime-lens, contributing to impressive images in which the subject stands out against a smoothly defocused background bokeh.

Refined optical performance

The lens has an innovative optical design to achieve clear, high-quality images by effectively minimizing distortion and chromatic aberration. A double-gauss configuration effectively suppresses field curvature and distortion, while a precisely placed aspherical element controls spherical aberration and coma for excellent optical characteristics right out to the image periphery. An aspherical element in a new optical design controls all types of aberration (spherical, coma, distortion), rendering the subject with superior sharpness.

Solid Durability

Designed for reliability in a wide range of environments, the metal mount adds a sophisticated feel as well as solid durability.

Fast, agile focusing

Fast and accurate autofocus is achieved with a newly developed DC motor focus actuator system which drives all lens groups for optimum focus precision and speed as well as quiet operation.


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Lens Type 35mm Full-frame
Lens Mount Type Sony E-mount
Aperture Circular
Aperture (Max.) f/1.8
Aperture (Min.) f/22
Focal Length (35mm equivalent) 50mm (35mm)
75mm (APS-C)
Filter Diameter 49 mm
Lens Groups-Elements 5 groups, 6 elements
Minimum Focus Distance 1.48' (0.45 m)
Angle of View 47° (35mm)
32° (APS-C)
Aperture Blade 7 blades (Circular aperture)
Aspheric Elements 1 aspheric
Maximum Magnification 0.14x
Tele-converter Compatibility - 1.4x No
Tele-converter Compatibility - 2.0x No
Weights and Measurements
Dimensions (Approx.) 2-3/4 x 2-3/8” (68.6 x 59.5mm)
Weight (Approx.) 6.6 oz (186g) (Without tripod mount)

  • ALC-SH146 Round shape, bayonet type
  • ALC-F49S Lens front cap
  • ALC-R1EM Lens rear cap