Sony Alpha SEL-20F28

20mm f/2.8 wide-angle lens for Sony NEX-series cameras

  • Sony Alpha SEL-20F28


  • Sony Alpha SEL-20F28

    Sample shot

  • Sony Alpha SEL-20F28

    Side view


Our take on the Sony Alpha SEL-20F28

by Woody Sherman

One of the best things a lens can be is portable. Weight and bulk can slow you down in a lot of ways, and while you can learn to get around those limitations (and should), it's always nice when you can say a quality lens weighs less than 3 ounces and is less than an inch long. Without further ado, we present the Sony SEL-20F28 pancake-style lens for the Sony NEX series of mirrorless interchangeable-lens cameras.

You're no doubt already aware your NEX camera is a great example of highly compact digital imaging technology. With this lens mounted on the front, it becomes small enough to slip into a coat pocket, while still featuring a very useful 30mm equivalent focal-length and remarkable light-gathering ability thanks to its f/2.8 aperture. If you're willing to walk around a little bit to achieve your ideal framing, this lens will reward you with tack-sharp, light-suffused images that resonate down the years. The SEL-20F28's candid snapshots, landscapes, and interior shots will all exude life, while its portability will keep you involved in the action around you.

See Compact System Cameras that work with this item See more info on this item


  • 20mm f/2.8 low-profile fixed focal-length lens
  • effective focal length: 30mm with Sony NEX-series cameras and camcorders
  • magnification ratio: x0.12
  • minimum focus distance: 7.8"
  • minimum aperture: f/16
  • lens construction: 6 groups, 6 elements
  • three aspherical lens elements for excellent sharpness with minimal chromatic aberration
  • filter/attachment size: 49mm
  • lens is 2-1/2" in diameter, 13/16" long
  • weight: 2.4 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee
Supplied Accessories:
  • front and rear lens caps

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Brand Compatibility Sony
Image Stabilization No
Focal Length 20mm
Maximum Aperture F2.8
Weight 2.4 ounces
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • E20mm F2.8 lens (SEL20F28)
  • 49mm Front lens cap (installed)
  • Rear lens cap (installed)
  • Operating Instructions
  • Precautions Before Using
  • Warranty Sheet

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Optics: The Sony SEL20F28 (E 20mm F2.8) compact wide-angle lens is compatible with the Sony α NEX-series interchangeable lens cameras and camcorders. The lens has a 35mm equivalent focal length of 30mm, and is recommended for a wide variety of photos, from wide, expansive landscapes to interiors to casual snapshots.

Circular Aperture: The lens features a 7-blade circular aperture that results in a pleasing defocused circular effect on the background of your image when the aperture is set to wide open. The same type of stepping motor used for the focus drive is also used for the aperture activation.


Lens E 20mm F2.8
35mm Equivalent 30mm
Mount Sony E-mount
Angle of View 70°
Lens Construction 6 elements in 6 groups (including 3 aspherical elements)
7-blade Circular aperture
Minimum Focus 7.92"
Filter Diameter 49mm
Aperture F2.8 maximum
F16 minimum
Weight 2.4 ounces
Dimensions Diameter=2.46"
Length=1.407" (1.87" w/caps)
See Compact System Cameras that work with this item
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Add accessories for the Sony Alpha SEL-20F28

Protect your lens from minor bumps and scratches. Lens filters can reduce reflections or glare, or increase contrast on your shots. See all categories & accessories

Hoya Lens Hood For compatible camera lenses (49mm)
3 people say
Your Price: $24.99
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Kenko Standard-coated ND 4X Filter Neutral density filter for compatible digital camera lenses (49mm)
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Hoya EVO Antistatic filter Circular polarizing filter (49mm)
Your Price: $80.90
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Hoya Alpha UV Filter Protective filter for compatible digital camera lenses (49mm)
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Your Price: $15.90
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Hoya EVO Antistatic UV Filter UV filter for compatible digital camera lenses (49mm)
Your Price: $47.90
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Think Tank Photo Lens Changer 15 V2.0 Bag for small interchangeable lenses
Your Price: $26.75
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SideKick™ by LensPen® Touchscreen cleaning kit
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Nikon Micro Fiber Cleaning Cloth Cleaning cloth for delicate surfaces
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OSN Lens Pen Hurricane Blower Blower for camera lenses, filters, sensors and SLR mirrors
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Nikon Fog Eliminator 3-Pack Reusable cleaning cloth for fog resistance on lens surfaces
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For a more in-depth review and enhanced detailed information on the Sony Alpha SEL-20F28, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_158EL20F28/Sony-Alpha-SEL-20F28.html ).