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Sony

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

  • Based on 290 reviews
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Arrives Sunday, Jun 22
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Features

  • Superior Image Quality
  • Minimum Focus Distance : 0.66 feet (0.2 m), Maximum Magnification ratio : 0.12x
  • Focal Length- 20 mm, Compact Length; Lens not Zoomable
  • Superb value and performance. Angle of View (APS-C) -70. Maximum aperture (F) - 2.8. 35 mm equivalent focal length (APS-C) - 11.82 inch
  • Broaden your view with a wide angle: From a vast cliff to a stretching sandy beach, fit everything in with a 20 mm wide angle. Angle of View (APS-C): 70

Description

20mm F2.8 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. 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 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. 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. 2013 Sony Electronics 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, HDMI is a trademark of HDMI Licensing . All other trademarks are trademarks of their respective owners. From the Manufacturer E 20mm F2.8 Wide-Angle Prime LensNot 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.TechnologyCircular ApertureWhen 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 elementsAspherical 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 FeaturesRear focusing elementsOnly 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.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.

Brand: Sony


Focal Length Description: 20 mm


Lens Type: Wide Angle


Compatible Mountings: Sony E


Camera Lens Description: 20 month


Product Dimensions: 0.79 x 2.48 x 2.48 inches


Item Weight: 2.43 ounces


Item model number: SEL20F28


Is Discontinued By Manufacturer: No


Date First Available: January 22, 2013


Manufacturer: Sony


Country of Origin: Thailand


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews

    • A very good lens...small, sharp, well built, versatile
*: Black Style: Lens only Set: Base
Oh, wow, this lens is so much better than the 16mm (SEL-16F28). I know because I used to have the 16mm but sold it after getting this one. The 20mm is much sharper, better built, with a nice and versatile field of view. It also takes the two adapters sold for the 16mm (the wide-angle which I had for the 16mm makes this 20mm a 15mm; and the fish-eye which I don't yet have but intend to buy). In case anyone's interested, I own a NEX-6 and an A6000. I have most of the "reasonably priced" Sony E-mount lenses: the 20mm with the wide angle adapter; the 30mm Macro (a nice lens if you can get one for a good price), the 35mm prime (one of my favorite lenses for its field of view and its sharp, high-quality images); the 50mm prime (a nice lens, especially for portraits with good bokeh); the 16-50mm PZ kit lens (which I take along with the 20mm when I want to travel very light but still have a bit of a zoom on hand because it takes good, but not great, pictures as you can see clearly see once you've tried the primes); the 55-210 manual zoom (great range, nice and sharp shots, fairly bulky, but I got it for only $150 so can't complain) and the 18-105 PZ "G" lens (which is a superb carry-around lens if you don't mind its relative bulk--it's long and wide, but not too heavy). I've also tried the Sigma lenses (19 and 30mm) but thought, "These would be OK if they weren't so cheaply made (scratch easily) and so bulky and if they had OSS." So I returned them in spite of their low prices. I've also tried for a weekend, but decided not to buy, the Sony 10-18 and 16-70 zooms and the Zeiss Touit 32mm. These are built with high-quality materials and take great shots but they are way too expensive, in my opinion at least, for the relative increase in image quality over the much less expensive lenses. I'm sure somebody out there will want to quote image tests and pixel peeping comparisons to debate my opinion about this 20mm lens and/or the pricy Zeiss lenses, but my thinking is simply that this "mirrorless" line of medium-format cameras doesn't really need lenses that cost so much. I admit there is a small market for those lenses; they are priced for folks who are willing to spend 2-3 times the money for "something a bit better" (that's how Sony makes back the investment in building lenses that relatively few people will buy). If you really want to step up, I suggest that you skip the APS-C line altogether and buy one of the newest full-frame "A7" camera bodies and any one of the pricey full-frame lenses available for it. With 4 times the money invested, you can see some better images (all else being equal). But switching from APS-C to full-frame means you're not in the same ballpark at all, to use a worn expression. I can say all this with confidence because photography is a hobby for me, not a profession. I'm not taking pictures for National Geographic (I'd love to imagine doing so with my A6000 and one of my pedestrian lenses, but I am not a delusional man). What I am is happy with two Sony APS-C cameras I own. I make use of, and accommodate for, their relative merits. The broad collection of E-mount lenses I have covers most every situation I am likely to get into as a hobbyist. Even better, I bought all my lenses for about 60 cents on the dollar (another hobby of mine is being a bargain hunter). If you're the kind of photographer that I am, then you'll want to know that this SEL-20F28 lens is a very nice lens to have. I bought it as a "new but sold as refurb" here on Amazon for about 40% off its list. For that kind of money, it really shines as a small, versatile lens (i.e., close-up shots and landscape shots are both very good). It's smaller and faster and sharper than the kit zoom; it also costs much more than the kit zoom. I will add that my 18-105 "G" lens takes a noticeably better (sharper, better contrast, less aberrations) picture set at 20mm than this prime does, but then the zoom is only f4.0 (minimum through its range) whereas the prime is f2.8 and it's 1/10th the size. That's why I have both in my lens bag. I hope this long ramble helps someone decide whether or not to buy this lens. If not, hey, reading it was free. Peace. ... show more
Reviewed in the United States on November 3, 2014 by WallyBear
    • Great travel and daily carry lens
*: Black Style: Lens only Set: Base
I have been using a Sony NEX-7 for about a year and was desperate for a good (yet not too ridiculously expensive) compact prime lens. I chose the NEX-7 to have a great camera that remained portable. I initially used the SEL50F18 (Sony's 50mm f/1.8 E Mount) but found the pictures to be less sharp than expected with that lens; the 50 mm also made the camera more bulky. Then I finally got this lens. The 20mm f/2.8 has been providing much sharper images. In addition, it's low profile makes the camera extremely portable. I use it on a daily basis for most of my "casual shooting." The only drawback is what is inherent to a 20mm lens - your shots will still be wide-angle even with a 1.5x crop factor. This is not ideal for portraits and there is some mild distortion. However, for traveling and use in tight indoor spaces, it has been an excellent choice. I tend to favor prime lenses over zoom because of better apertures, size/weight, and my style of shooting. I just tend to compose better with a prime. However, if you're not used to using a prime lens or want to avoid wider angles, there are several other options available for NEX line. For those looking for a daily carry lens, this might just be the one. ... show more
Reviewed in the United States on October 30, 2013 by Doc Mochi
    • great snapshot lens
*: Black Style: Lens only Set: Base
They say the best camera is the one that you have with you, so I bought this to make my a7 more portable and turn it into a snapshot and street camera. The a7 will detect the lens and use Crop Mode instead of Full Frame, which gives you a 30mm view that is great for all around use. The image quality is not fine art level but good for what it is, an affordable and portable lens. There is slight distortion and vignette sometimes, but Sony has a lens correction feature built into the camera that does a great job of fixing them if they bother you. Also the more you avoid the extreme high or low F stops the cleaner the image will be. ... show more
Reviewed in the United States on December 27, 2020 by Sabu
    • My Favorite E Mount Lens so far
*: Black Style: Lens only Set: Base
Buy this over the Sigma 19mm. I've also written a review about that lens. I'm an armature photographer, and while my composition skills are becoming more proficient I still like to focus on sharpness. To me that is important (although some may argue otherwise). Either way, I love this pancake. Recently I've been shooting a little more wide angle for candids shots. This lens fits the bill! Unlike the Sigma 19mm there is sharpness throughout all aperture settings on this lens. The Sigma seems softer than I like at 2.8. That's my biggest complaint about that lens. This little lens is discrete with is pancake form factor, making it possible to store in a coat pocket if you'd like. This lens is also faster than the Sigma. I'd recommend this for street photography or candids. It is a little pricier then the Sigma but well worth it. I highly recommend this lens. ... show more
Reviewed in the United States on June 22, 2014 by Mindcontrol
    • Very tiny lens for wider angle photography and more
*: Black Style: Lens only Set: Base
Review Image by Jason Wilson Jason Wilson
This is a tiny and light pancake lens (even smaller than the 16-50mm kit lens!). The 2.8 aperture allows for some bokeh and decent low-light performance on the a5100 (you may need to use aperture priority mode to take advantage of this lens). I also own the Sigma 19mm 2.8 lens and I feel like I will use this lens more as part of a very compact and light-weight kit even though that lens is pretty small (a5100 + the Meike MK-35mm F/1.4 APS-C or Samyang 35mm f2.8 FE lens). I simply wish this lens was cheaper! ... show more
Reviewed in the United States on December 3, 2019 by Jason Wilson Jason Wilson

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