View source for Sony FE 28-70mm F3.5-5.6 OSS

{{Infobox photographic lens
|name         = Sony FE 28-70mm F3.5-5.6 OSS
|image        = Sony FE 28-70mm F3.5-5.6 OSS lens without lens hood.jpg
|caption      =
|maker        = Sony
|mount        = [[Sony E-mount]]
|focusdrive   = Stepper motor
|feat-sbf     =
|feat-is      = y
|feat-ar      = n
|feat-mfo     = y
|feat-ws      = y
|feat-special =
|application  = Multipurpose
|type         = z
|flength      = 28-70mm
|flength-eq   =
|image-format = [[35mm full-frame]]
|aperture     = {{f/}}3.5 (22.0) - 5.6 (36.0)
|elements     = 9
|groups       = 8
|diaphragm    = 7
|close-dist   = {{convert|0.40|m|ft}}
|max-dist     = Infinity
|max-mag      = 0.20x
|max-diameter = {{convert|73.0|mm|in}}
|max-length   = {{convert|95.0|mm|in}}
|weight       = {{convert|426|g|lb}}
|filter       = 55mm
|hood         = Petal-shape
|case         =
|av-horiz     =
|av-vert      =
|av-diag      =
|start        = 2013
|stop         =
|replace      =
|msrp         = $499
}}
The '''Sony FE 28-70mm F3.5-5.6 OSS''' is a full-frame (FE) variable maximum aperture standard [[zoom lens]] for [[Sony E-mount]], announced by [[Sony]] on October 16, 2013.<ref name="dpreview">{{cite web|url=https://www.dpreview.com/products/sony/lenses/sony_fe_28-70_3p5-5p6|publisher=dpreview.com|title=Sony FE 28-70mm F3.5-5.6 OSS: Digital Photography Review|accessdate=2017-06-23|archive-date=2016-07-21|archive-url=https://web.archive.org/web/20160721050641/http://www.dpreview.com/products/sony/lenses/sony_fe_28-70_3p5-5p6|url-status=live}}</ref><ref>{{cite web |author=DxO |url=https://www.dxomark.com/Reviews/Sony-FE-28-70mm-F3.5-5.6-OSS-Serious-contender-to-the-Zeiss |title=Sony FE 28-70mm F3.5-5.6 OSS: Serious contender to the Zeiss? |publisher=DxOMark |date= |accessdate=2017-07-12 |archive-date=2016-08-16 |archive-url=https://web.archive.org/web/20160816005816/http://www.dxomark.com/Reviews/Sony-FE-28-70mm-F3.5-5.6-OSS-Serious-contender-to-the-Zeiss |url-status=live }}</ref> It was the first [[kit lens]] for Sony's full-frame [[Sony E-mount|E-mount]] (FE) system,<ref name="jottings"/> and was released on the same day as the [[Sony α7]] and [[Sony α7R]]. It is often bundled with various Sony E-mount [[Full-frame DSLR|full-frame]] mirrorless cameras, and is a less costly alternative to other standard zooms such as the [[Sony Carl Zeiss Vario-Tessar T* FE 24-70mm F4 ZA OSS]].
Though designed for Sony's full frame E-mount cameras, the lens can be used on Sony's [[APS-C]] E-mount camera bodies, with an equivalent full-frame field-of-view of 42-105mm.
==Construction==
The lens has a [[weather resistance|weather resistant]] plastic construction with a matte-black finish and rubber zoom and focus rings. The barrel of the lens moves outward from the main lens body as it's zoomed in from 28mm to 70mm.
==Optical properties==
The Sony FE 28-70mm F3.5-5.6 OSS shows acceptable [[chromatic aberration]]<ref name="photozone">{{cite web |url=http://www.photozone.de/sonyalphaff/999-sony2870f3556oss?start=1 |title=Sony FE 28-70mm f/3.5-5.6 OSS - Review / Test Report - Analysis |publisher=Photozone.de |date= |accessdate=2017-07-12 |archive-date=2017-06-30 |archive-url=https://web.archive.org/web/20170630221418/http://www.photozone.de/sonyalphaff/999-sony2870f3556oss?start=1 |url-status=live }}</ref> and good [[bokeh]].<ref>{{cite web |url=http://www.photographyblog.com/reviews/sony_fe_28_70mm_f3_5_5_6_oss_review/ |title=Sony FE 28-70mm F3.5-5.6 OSS Review |publisher=PhotographyBLOG |date=2014-02-07 |accessdate=2017-07-12 |archive-date=2017-07-05 |archive-url=https://web.archive.org/web/20170705054307/http://www.photographyblog.com/reviews/sony_fe_28_70mm_f3_5_5_6_oss_review/ |url-status=live }}</ref> Corner sharpness becomes “acceptable” when the lens is stopped down to f/8.<ref name="photozone" /> Natively, it suffers from fairly noticeable [[Distortion (optics)|distortion]] - 2.5% barrel distortion at 28mm, 3.2% pincushion at 50mm and 3.7% pincushion at 70mm, and requires correction in-camera or in raw processing.<ref name="photozone" />
Its optical performance is competitive with the Sony Carl Zeiss Vario-Tessar T* FE 24-70mm F4 ZA OSS in every metric tested by DxOMark.<ref>{{cite web |author=DxO |url=https://www.dxomark.com/Reviews/Sony-FE-28-70mm-F3.5-5.6-OSS-Serious-contender-to-the-Zeiss/Sony-FE-28-70mm-F3.5-5.6-OSS-versus-Sony-FE-Carl-Zeiss-Vario-Tessar-T-24-70mm-F4-ZA-OSS-both-mounted-on-Sony-A7R |title=Sony FE 28-70mm F3.5-5.6 OSS versus Sony FE Carl Zeiss Vario-Tessar T* 24-70mm F4 ZA OSS both mounted on Sony A7R |publisher=DxOMark |date= |accessdate=2017-07-12 |archive-date=2016-08-08 |archive-url=https://web.archive.org/web/20160808181555/http://www.dxomark.com/Reviews/Sony-FE-28-70mm-F3.5-5.6-OSS-Serious-contender-to-the-Zeiss/Sony-FE-28-70mm-F3.5-5.6-OSS-versus-Sony-FE-Carl-Zeiss-Vario-Tessar-T-24-70mm-F4-ZA-OSS-both-mounted-on-Sony-A7R |url-status=live }}</ref>
==Autofocus==
The lens focuses internally, using a linear autofocus motor.<ref name="jottings">{{cite web |last=Munger |first=Kurt |url=http://photojottings.com/sony-fe-28-70mm-f3-5-5-6-oss-review/ |title=Sony FE 28-70mm F/3.5-5.6 OSS review |publisher=Photo Jottings |date=2014-08-01 |accessdate=2017-07-12 |archive-date=2017-03-12 |archive-url=https://web.archive.org/web/20170312123506/http://photojottings.com/sony-fe-28-70mm-f3-5-5-6-oss-review/ |url-status=live }}</ref> Its autofocus is “silent and accurate” and “very quick”.<ref>{{cite web |url=http://www.thephoblographer.com/2015/11/13/review-sony-28-70mm-f3-5-5-6-oss-sony-fe/ |title=Review: Sony 28-70mm f3.5-5.6 OSS (Sony FE) |publisher=Thephoblographer.com |date=2015-11-13 |accessdate=2017-07-12 |archive-date=2017-03-02 |archive-url=https://web.archive.org/web/20170302021638/http://www.thephoblographer.com/2015/11/13/review-sony-28-70mm-f3-5-5-6-oss-sony-fe/ |url-status=live }}</ref>
==See also==
*[[List of Sony E-mount lenses]]
*[[List of standard zoom lenses]]
==References==
{{Reflist}}
[[Category:Camera lenses introduced in 2013]]
[[Category:Sony E-mount lenses|28-70]]
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