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  • Sony  SEL-20F28 E-Mount 20mm F2.8 Prime Lens
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Sony SEL-20F28 E-Mount 20mm F2.8 Prime Lens

by Sony
| 9 answered questions

List Price: $349.99
Price: $348.00 and eligible for FREE Two-Day Shipping Details
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  • Superior Image Quality
  • Compact Length
  • superb value and performance
10 new from $348.00 9 used from $286.00 2 refurbished from $345.95

Frequently Bought Together

Sony  SEL-20F28 E-Mount 20mm F2.8 Prime Lens + Sony NEX-5TL Compact Interchangeable Lens Digital Camera with 16-50mm Power Zoom Lens
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Technical Details

  • all-glass-optical
  • interchangeable-lens
  • zoom

Read about our customers' top-rated lenses and cameras on our review pages: Lenses, Digital SLR Cameras, Compact System Cameras

Product Details

  • Product Dimensions: 20 x 63 x 3.3 inches ; 2.4 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B00B20OYUO
  • Item model number: SEL-20F28
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (19 customer reviews)
  • Date first available at Amazon.com: January 22, 2013

Product Description

From the Manufacturer

Sony make . believe

E 20mm F2.8 Wide-Angle Prime Lens

Not only will the 20mm (30mm in 35mm full-frame format) focal length and F2.8 maximum aperture appeal to experienced photographers, but the outstanding resolution of this lens will satisfy their most stringent image quality requirements as well. Three aspheric elements help to achieve superb contrast and resolution right out to the image edges, while simultaneously enabling a compact 20.4 mm-thick pancake design that makes for a portable combination with compact E-mount cameras.

E 20mm F2.8 Wide-Angle Prime Lens

Technology

Circular Aperture
Aspherical lens elements

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.

Additional Features

Rear focusing elements

Only the rear groups of the optical system move to focus the lens, which allows for speedy AF operation and a shorter minimum focusing distance. Since the front of the lens does not rotate, operability is improved when shooting with a polarizing filter attached.

Sony make . believe

2013 Sony Electronics Inc. All rights reserved. Reproduction in whole or in part without written permission is prohibited. Sony is not responsible for typographic and photographic errors. Features and specifications are subject to change without notice. Sony, BIONZ, BRAVIA, BRAVIA Sync, Cyber-shot, Exmor, InfoLITHIUM, Memory Stick PRO Duo, Memory Stick Duo, the Memory Stick logo, Optical SteadyShot, Remote Commander, Smile Shutter, Stamina, SteadyShot, Theatre Sync, TruBlack, and Xtra Fine LCD are trademarks of Sony. Microsoft, Windows, and Windows Vista are trademarks of Microsoft Corporation. Mac OS and iMovie are trademarks of Apple Computers, Inc. HDMI is a trademark of HDMI Licensing LLC. All other trademarks are trademarks of their respective owners.

Product Description

20mm F2.8 Prime Lens

Customer Questions & Answers

Customer Reviews

4.3 out of 5 stars
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See all 19 customer reviews
It is a little pricier then the Sigma but well worth it.
Mindcontrol
That being said the lens is also reasonably sharp, reasonably fast, and the build quality is top notch.
M. Banas
This lens makes my NEX 5R pocketable in my jacket pocket.
wusang

Most Helpful Customer Reviews

49 of 51 people found the following review helpful By Michael McKee TOP 1000 REVIEWERVINE VOICE on April 19, 2013
This is the lens that Sony ought to have made when the first NEX cameras came out, a reasonably fast, medium-wide angle, pancake prime. It's a perfect focal length for street photography or casual snapshots. It's small and light, making NEX cameras reasonably pocketable. It's not exceptional, but reasonably sharp across the entire field of view, at least when it is stopped down. I love the size of this lens, though it is wide enough that the edges stick out on a 5n. Just a bit, but it's there.

I was hesitant to put a preorder into B&H when this lens was announced. Sony's previous wide angle prime, the 16mm was a poor lens. I borrowed a friend's and gave it back quickly. It just wasn't sharp, and surprisingly for such a short lens, it didn't focus quickly. There are no focus problems with the 20mm.

It was a relief to look at my first images from this new prime lens. They are are adequately sharp from f/4 and smaller apertures. At f/2.8 they are at least as sharp as the old 16mm was at any focal length. It's also nice to see Sony make a lens that is sharp in the corners. Except for the Zeiss 24mm, Sony's lenses tend to have great center sharpness but soft edges. My guess is that comes from too much focus on video lenses rather than still lenses. This lens is pretty sharp, at least at the apertures that I normally use 5.6-8. It's acceptable at 2.8 and pretty good at f/4. It's soft at f/16 but still usable. I'm satisfied.

One question is how this compares to the Sigma 19mm, which is a good lens. The two obvious differences are price and size. You can pick up an older model Sigma for $150 or less, which make it very attractive. The Sigma is very sharp in the center, from f/2.8 on, sharper than the Sony 20mm. However the Sony is definitely sharper at the edges.
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6 of 6 people found the following review helpful By Bart on October 4, 2013
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If I'm not mistaken, this is the smallest e-mount lens on the market (smaller than the 16mm). The image quality isn't bad, but certainly not as good as even the 35mm f1.8 (much less the zeiss glass), so don't expect to be blown away. It definitely gets soft when wide open but stopped down a bit it's good, which is where I find myself wanting it most of the time anyway.

$350 seems a little high, but $290 or less for a used one is a steal. After all, it does provide the most pocketable nex configuration currently available. It's not going to fit into your pants pocket, but it will easily fit into a small bag/backpack or jacket pocket. Which is great for anybody trying to make better use of their camera and carry it with them more often. You know what they say, "the best camera is the one you have with you."
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14 of 17 people found the following review helpful By Lyndon Wong on May 1, 2013
Recently bought the NEX-5R, initially with the SEL16 pancake. Very happy with returning that lens for the SEL20. This newer pancake does appear to take sharper jpeg images, and perhaps because of the more moderate wide angle focal length, distorts faces much less, especially near edges of the frame. So it's much better for taking pictures of people. Price is steep compared to the respected Sigma 19mm e-mount, but I put a premium on compactness of the combined camera and lens, so I coughed up the money. If it was under $300, like the SEL50F18, I'd give it 5 stars.
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12 of 15 people found the following review helpful By Miguel G. on December 5, 2013
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I would give it four stars for size alone, but image quality just isn't that spectacular (three stars) -- not really much better than the 16mm pancake I already have. Unless you REALLY REALLY want a pancake, you would be better off with the 19mm Sigma f/2.8 at $200.Not to mention the fact that the Sigma comes with a very nice case and sun visor (the Sony comes with nothing). Come on Sony, don't be so cheap! I got this lens for $100 off as part of a deal Sony was running, but I would not have paid $350 for it -- no way.
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7 of 8 people found the following review helpful By wusang on December 3, 2013
This lens makes my NEX 5R pocketable in my jacket pocket. The image is sharp at f2.8 without stopping down. With the new firmware (v1.02) of 8/27/2013, I get PDAF as well as CDAF, so that the hybrid AF is fully functional. Auto-focusing is very quick. The framing may be a little wider than what you want for indoor shots of people but you can use Clear Image Zoom to get 30mm (45mm FF equiv) framing, or simply crop later. Cropped images look quite sharp. There is no OSS but for this 20mm lens, OSS is hardly needed. If you do want OSS, you should get the SEL35f18 that will also give you 1.33 stops advantage in low light, plus the great bokeh with f1.8 aperture.
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6 of 7 people found the following review helpful By M. Banas on October 29, 2013
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The best attribute of this lens is it's tiny size. My NEX-7 fits into a coat pocket with this lens attached. That being said the lens is also reasonably sharp, reasonably fast, and the build quality is top notch. I feel that the immage quality is better than what you can get with either of the kit lenses that SONY ships with their NEX cameras.
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3 of 3 people found the following review helpful By CaptBuddy on June 1, 2014
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I bought this 20 mm f2.8 Sony lens to use on the Sony A6000. It is a good solid lens and gives sharp focused images. Out of habit, I shot most of my images on Av, so I like having this slightly faster lens. Also, it is very good for video. The 20mm is small and light, and that is good for a small light camera like the A6000. I'm going to use the 20 mm lens as my primary lens when I travel.
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7 of 9 people found the following review helpful By Gregory S. Wilder on July 3, 2013
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If you have a NEX, then you need this. Much better than the SEL 16mm I have owned. And only slighly bigger (slightly). This is my normal walk around lens on my NEX6. Highly recommended.
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