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brass chrome tube pre bent 14mm

author:MF manufacturerstime:2022-03-15 21:46:22

From Hummingbird Network-Equipment channel,Original link:
https://m.fengniao.com/document/5357867.html

·Evaluation preface and product introduction

2018year2moon,Sigma released14-24mm F2.8 DG HSM | Artlens,As a fierce material for the SLR camp,The release of this lens has a lot of people excited and crazy,Its reputation and quality are still quite good in the hearts of film fans。At present, full-frame mirrorless cameras have occupied half of the full-frame camera market.,More and more users are using full-frame camera mirrorless,They desperately hope that Sigma will release a mirrorless version of this lens,Using the adapter ring is still cumbersome and cumbersome。Finally, after a lapse of about a year and a half, Sigma2019year7month,Officially released the micro-single mount version of this lens:Sigma14-24mm F2.8 DG DN | Art。and released on the first launchLbayonet and sonyETwo versions of bayonet,8599The price of yuan also makes this super wide-angle look very close to the people。

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Sigma14-24mm F2.8 DG DN | Artwith Sonyα7R III

Although the focal length of this lens、The aperture value, etc. are the same as the SLR version,But it is a re-developed and designed lens for micro single,both in terms of product volume and weight,or different in optical structure,So actually Sigma14-24mm F2.8 DG DN | Artis a newly developed product,The birth of this lens also makes up for the lack of constant in the micro-single field at this stage.f/2.8Large aperture ultra-wide lens blank,plus its8599yuan selling price,For friends in real need,I personally think it's a good choice。

(brass chrome tube pre bent 14mm)·Sigma14-24mm F2.8 DG DN | ArtLens parameters

·Lens focal length:14-24mm;

·Lens aperture range:f/2.8-f/22;

·Aperture blades:11Circular aperture;

·Lens structure:13Group18piece(Include3Aspherical lens、5pieceSLDSpecial Extra Low Dispersion Lenses、1pieceFLDFluorite Grade Low Dispersion Lenses);

·Minimum focus distance:0.28m;

(brass chrome tube pre bent 14mm)·maximum magnification:1:1.73;

·Comes with rear filter holder、NPCNanoporous Coating;

·lens size:φ85mm×131mm;

·weight:795g

·bayonet type:L、sonyE

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Sigma14-24mm F2.8 DG DN | ArtPackage(The black card isDIYfilter mold)

Sigma14-24mm F2.8 DG DN | ArtThe box of the Sigma has the usual black and white design,Simple and elegant。The part of the box with black bars on a white background says“14-24mm F2.8 DG DN”Indicates the identity of the lens in the box,Silver-grey circle on the box“A”The standard shows its pureArtSeries Lens Lineage。This design is also a continuation of Sigma's family-oriented packaging design language.,has a fairly high degree of recognition。

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Sigma14-24mm F2.8 DG DN | Art

Sigma14-24mm F2.8 DG DN | ArtNot only does the lens usef/2.8constant large aperture design,also uses a more complex13Group18Sheet Optical Structure,which contains up to3Aspherical lens、5pieceSLDSpecial Extra Low Dispersion Lenses、1pieceFLDFluorite Grade Low Dispersion Lenses,It can be said to be full of materials。Besides,The new lens also has built-in11Circular Aperture Blades,The closest focusing distance is only28cm。

·Appearance and details

Sigma14-24mm F2.8 DG DN | Artand previous Sigma14-24mm F2.8 HSM Artcompared to,Much smaller in size,But the design language remains SigmaArtThe consistent style of the series,After removing the focus distance indicator window, it still remainsAF/MFswitch,Added customizableAF-LFocus lock button,φ85mm×131mmsize and795gThe weight is perfect for a full-frame mirrorless camera。

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Sigma14-24mm F2.8 DG DN | ArtStill very small

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Sigma14-24mm F2.8 DG DN | Artthe model number and“A”Series ID

Sigma14-24mm F2.8 DG DN | ArtThe mirror body part is a layer of fine frosted coating,It can effectively prevent fingerprints while increasing the feel。To add industrial art to the lens,This lens also has a bright silver circle on the barrel“A”logoARTSeries Lens Lineage,The rear of the mirror body has a distinctive smooth lacquer design。

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)Sigma14-24mm F2.8 DG DN | ArtThree different thicknesses of non-slip texture,feel good

Sigma14-24mm F2.8 DG DN | ArtThe lens has an internal focus design,Lens does not rotate or stick out when focusing,Therefore, users do not need to worry about the problem of dust entering the lens during use。and Sigma14-24mm F2.8 DG DN ArtManual focus ring、zoom ring andAF/MFSealing rings are installed on the switch panel,Has strong protective performance,Allows photographers to shoot with peace of mind in harsh outdoor environments。

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Sigma14-24mm F2.8 DG DN | ArtMirror function buttons

(brass chrome tube pre bent 14mm)Sigma14-24mm F2.8 DG DN | ArtThis lens has only two function switches on the entire body of the lens,one isAF/MFthe toggle lever,OneAFLFocus lock button,compared to Sigma14-24mm F2.8 DG HSM | Art,It has an additional focus lock button,It is also more in line with the design ideas of micro single lens。

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Sigma14-24mm F2.8 DG DN | Artzoom ring

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Sigma14-24mm F2.8 DG DN | Artfocus ring

Sigma14-24mm F2.8 DG DN | ArtThe front of the lens has a waterproof and anti-fouling coating,Even with rain or fingerprints,Can also be easily wiped off,easy maintenance,also,It also features an integrated hood design,Integrated lens hood not only blocks excess light and prevents lens flare,It can also protect the lens。

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)Sigma14-24mm F2.8 DG DN | Artlight bulb design、Integrated hood

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)Sigma14-24mm F2.8 DG DN | ArtFront mirror group coating and integrated lens hood

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Somarium14-24mm F2.8 DG DN | ArtLens bay and filter mounting tank

Somarium14-24mm F2.8 DG DN | ArtBrass-chrome-chrome-chrome card mouth workmanship is quite fine。At the same time, the position of the lens bay has a sealed rubber ring.,Have a certain dust-proof waterproof drip function。And there is a special filter mounting card slot on the tail of the lens.,So the user only needs the post when the filter is installed, it can be completed.,No need to install the filter bracket in front of the lens,But one thing is worth noting is,Sigma also providesDIYFilter mold,Users can purchase third-party gelatin filters。

·14mmResolution real shot test

As a super wide-angle lens,Seasoned horse14-24mm F2.8 DG HSM | ArtThe performance of everyone is obvious to all,So micro version of the season14-24mm F2.8 DG DN | ArtCan you continue to express excellent??I choose all lens compensation in the closure machine.,AdoptISO 100,Adjust the aperture step by step100%Intercept picture center and edge,Let's take a look at the actual performance of this lens,First let's see14mmNet quality。

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From our actual shooting screenshot,Somarium14-24mm F2.8 DG DN | ArtThis lens is14mmThe sharpness and contrast of the end center are still quite good.,And the picture quality and center of the maximum aperture edge,Contrary,The quality of the quality after contraction is a receptacle.。Inf/22Aperture,Optical diffraction phenomenon of small aperture,The center and edge quality have a certain degree of decline,Especially the decline in edge quality is relatively powerful.。

·24mmResolution real shot test

(brass chrome tube pre bent 14mm)In the same horse14-24mm F2.8 DG DN | Artof24mmend,The shooting method I use and14mmEnd,Turnover all lens compensation in the machine,AdoptISO 100,Adjust the aperture step by step100%Intercept picture center and edge。

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In sick14-24mm F2.8 DG DN | Artof24mmend,Overall performance and14mmNet very similar,When the aperture is open,The center maintains very high sharpness,The increase in the increase in the edge image quality after shrinking a gear aperture is also very obvious.;Similarly this lensf/22Underground,Optical diffraction phenomenon affects the image quality of the center and edges,Whether it is sharpness or contrast, there is a decline in different degrees。

(brass chrome tube pre bent 14mm)·perspective/distortion/Disappearance

Perspective This word is earliered in painting,For example, a parallel road in both sides,You will feel that both sides of the road are getting closer and closer.,The last two lines are in distinguish at a point。This is an embodiment of a perspective relationship。Inside the lens,This distance is concentrated in a point in a point.,Different perspective also brings different effects。

Perspective is a very important photography language,Control perspective and distortion are very common in shooting。Through different flumentism,We can express different emotions and atmospheres,For example, strong perspective can take exaggerated space sensation,Weaken perspective,You can make the picture more compact。When we were shooting,Receive the strength of perspective with a nearly different objects。The angle of shooting is different,Strong feelings will also be different,This perspective change is not linear。

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Somarium14-24mm F2.8 DG DN | ArtEach focal section perspective effect

Factors affecting perspective and your shooting distance have a big relationship,However, due to the physical condition of the focal section of the super wide-angle lens,In the same way,Background perspective relationship is completely different,This is not a problem that will be further solved.。Although there is no direct relationship in perspective and focal length,But there is indirect relationship,Use super wide-angle lens,You must be close to the subject,Because the shooting angle of the super wide-angle lens is very wide,A large number of scenes in the foreground and background being photographed in the lens。If you want to use non-super-wide lenses,I have to get the distance between you and the subject.,At this time, there is a lot of changes in the prospects and scenery in the background.。This means,When you use different focal lengths to shoot the same object,And let it consistent in the photo,The foreground and background of the photos will have a big difference。This is due to the change in fluent sense and lens shooting angle.。

(brass chrome tube pre bent 14mm)·Distortion real shot test

For wide-angle lenses, especially super wide-angle lenses,Distortion control is obviously more important than standard lens and telephoto lenses.,Distortion control is good, the viewing angle lost in the late adjustment deformation is smaller。Somarium14-24mm F2.8 DG DN | ArtThe lens design contains3Slice asprojective,The most in front of the entire mirror set is a large diameter aspherical lens.。Sigma official claims,Combination with other mirror groups through large non-spherical lenses,Can effectively reduce distortion to very low。Let's take a look at the horse.14-24mm F2.8 DG DN | Artexist14mmand24mmDistortion performance at both ends。The same as the previous test,I closed all the lens compensation functions in the machine.。

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)14mmDistortion

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24mmDistortion

Through actual shooting,Somarium14-24mm F2.8 DG DN | ArtApart from14mmThe focal section has a slight barrel distortion,24mmThe performance of the focal section,The naked eye can't see any distortion.。This shows the use of three aspherical lenses.,The control capability of aberration is really effective.。And after opening the insider compensation,Somarium14-24mm F2.8 DG DN | ArtPerformance is more favorable。

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f/2.8Aperture color disappearance100%screenshot

Somarium14-24mm F2.8 DG DN | ArtThe lens contains1pieceFLDLens and5pieceSLDlens,ConfigureFLDandSLDThese high refractive index lenses,Further improveFLDandSLDMirror elimination magnification color difference,That is, purple edges of high contrast edges。I use each shroud to shoot a high contrast picture, respectively.,pass through100%Enlarge screenshots to observe the horse14-24mm F2.8 DG DN | ArtThis lens inhibits dispersion。The same as the previous test,I closed all the lens compensation functions in the machine.,Through actual shooting,The overall performance of this lens is very satisfactory,In fact, in the past few years, the shots of the timida have always had good results in dispersion control.,Sick14-24mm F2.8 DG DN | ArtIt is also expected to have such performance.。

·Dark corner/Ghost/Xingmang real shot

We are most concerned about its imaging performance under the maximum aperture,Is the control capability for the axial angle phenomenon of wide-angle screen。The following is a season14-24mm F2.8 DG DN | ArtLens control performance for the dark angle。Before the test,I closed all the lens compensation in the machine.。

brass chrome tube pre bent 14mmbrass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)Through actual shooting,Can see timid14-24mm F2.8 DG DN | ArtThis lens is in14mmEnd or24mmend,maximum aperturef/2.8in the case of,There are various degrees of vignetting,But after closing the aperture by one stop,Vignetting has been greatly alleviated,For such an ultra-wide-angle lens,It's pretty good to have such a performance.。If the in-camera lens compensation function is turned on,even at maximum aperturef/2.8in the case of,Almost imperceptible vignetting。

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Sigma14-24mm F2.8 DG DN | Artghost flare real shot

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Sigma14-24mm F2.8 DG DN | ArtReal shooting of stars in each block of aperture

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focal length:24mm aperture:f/20.0 ISOSensitivity:50

exposure time:25/1s Exposure Compensation:-0.3EV white balance:automatic

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)focal length:14mm aperture:f/8.0 ISOSensitivity:1250

exposure time:1/3s Exposure Compensation:-0.3EV white balance:automatic

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focal length:14mm aperture:f/10.0 ISOSensitivity:2000

exposure time:1/4s Exposure Compensation:-0.3EV white balance:automatic

Sigma14-24mm F2.8 DG DN | ArtThe lens is equipped with a nanoporous coating designed by Sigma,When shooting with ghost flare,I used extreme direct sunlight shooting conditions,Found it to control ghost flare well,No particularly obvious ghosting and glare,The contrast did not decrease significantly。also,This lens is also equipped with11Circular Aperture Blades,The stars created are still very beautiful。

·real shot

(brass chrome tube pre bent 14mm)For users who buy an ultra-wide-angle lens,The biggest use may still be used to shoot natural scenery and indoor and outdoor architecture,Although this test is not possible to cover everything on the sample,However, restoring the subject matter of this lens as much as possible can allow users to have a more comprehensive understanding of this lens.,So after I got this lens,In the selection of shooting subjects, indoor and outdoor architecture and other subjects were selected。(This test body is Sonyα7R III,The following samples only slightly compress the image file size,did not change any pixels and tones,Interested users can click on the sample to view the larger image。

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focal length:24mm aperture:f/5.6 ISOSensitivity:1000

exposure time:1/40s Exposure Compensation:0EV white balance:automatic

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focal length:14mm aperture:f/5.6 ISOSensitivity:500

exposure time:1/40s Exposure Compensation:0EV white balance:automatic

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focal length:14mm aperture:f/5.6 ISOSensitivity:1600

exposure time:1/40s Exposure Compensation:0EV white balance:automatic

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focal length:14mm aperture:f/5.6 ISOSensitivity:100

(brass chrome tube pre bent 14mm)exposure time:1/40s Exposure Compensation:0EV white balance:automatic

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focal length:19mm aperture:f/5.6 ISOSensitivity:200

(brass chrome tube pre bent 14mm)exposure time:1/40s Exposure Compensation:0EV white balance:automatic

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focal length:14mm aperture:f/5.6 ISOSensitivity:400

exposure time:1/40s Exposure Compensation:0EV white balance:automatic

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focal length:16mm aperture:f/6.3 ISOSensitivity:3200

exposure time:1/50s Exposure Compensation:0EV white balance:automatic

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)focal length:14mm aperture:f/2.8 ISOSensitivity:100

exposure time:1/250s Exposure Compensation:0EV white balance:automatic

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focal length:14mm aperture:f/2.8 ISOSensitivity:400

exposure time:1/1600s Exposure Compensation:0EV white balance:automatic

Sigma14-24mm F2.8 DG DN | Artlens has“lightweight”figure,in actual use,with Sonyα7R IIIRear handheld shooting is basically stress-free,The damping of the zoom ring and focus ring is also very good。And the front lens of the large bulb,looks very cool,The integrated lens hood not only blocks excess light to prevent lens flare,Also protects our lenses。

·More samples and summary

(brass chrome tube pre bent 14mm)Next I use Sigma14-24mm F2.8 DG DN | ArtCame outside to shoot some architectural samples,(This test body is Sonyα7R III,The following samples only slightly compress the image file size,did not change any pixels and tones,Interested users can click on the sample to view the larger image。)

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focal length:14mm aperture:f/8.0 ISOSensitivity:200

exposure time:1/500s Exposure Compensation:0EV white balance:automatic

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focal length:14mm aperture:f/8.0 ISOSensitivity:200

exposure time:1/320s Exposure Compensation:0EV White balance:automatic

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)focal length:14mm aperture:f/2.8 ISOSensitivity:50

(brass chrome tube pre bent 14mm)Exposure time:1/2000s Exposure compensation:0EV White balance:automatic

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focal length:14mm aperture:f/5.6 ISOSensitivity:100

Exposure time:1/500s Exposure compensation:0.3EV White balance:automatic

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focal length:14mm aperture:f/5.6 ISOSensitivity:200

(brass chrome tube pre bent 14mm)Exposure time:1/800s Exposure compensation:0EV White balance:automatic

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)focal length:14mm aperture:f/8.0 ISOSensitivity:200

Exposure time:1/800s Exposure compensation:0EV White balance:automatic

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focal length:14mm aperture:f/7.1 ISOSensitivity:50

Exposure time:1/200s Exposure compensation:0EV White balance:automatic

brass chrome tube pre bent 14mm(brass chrome tube pre bent 14mm)focal length:14mm aperture:f/6.3 ISOSensitivity:50

Exposure time:1/250s Exposure compensation:0EV White balance:automatic

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focal length:14mm aperture:f/6.3 ISOSensitivity:50

Exposure time:1/250s Exposure compensation:0EV White balance:automatic

·Editor's point of view:

After approaching two weeks,Talk about the overall feeling!once Upon a time,The micro single shot is not slightly spit by each photo,But after the high quality lens of the volume and weight,This kind of voice gradually seated,It has been mentioned in recent years.。But when the horse14-24mm F2.8 DG DN | ArtAfter the appearance,It seems that people think of the topic of the hot fire.:Micro single shot is slightly。Somarium14-24mm F2.8 DG DN | ArtReally small,Also very light,I have to know“Fitness Equipment”The title of the title will also launch such a small lens.,It is true that everyone is not thinking.,So it is lightweight,The size is the first impression for me.。

(brass chrome tube pre bent 14mm)Second, it is to use,The body I use is Sonyα7R III,As the most mainstream high-pixel Sony Micro,Have a very good fit to this lens。Perfectly played a horse14-24mm F2.8 DG DN | Artkinds of“Big trick”,Even if it does not open the interior lens compensation,This lens is in dispersion、Dark corner、Ghost glare, etc. have a good performance.。As a super wide-angle lens,The perspective relationship expressed by this lens is also very comfortable.。And the most important thing that makes me praised by its image quality,This is a high quality performance during the test process or during real shot.。

Finally, I will talk about the price.,At the beginning of the horse14-24mm F2.8 HSM | ArtPrice set8499When the renminbi, it has highlighted its excellent cost performance.,And this micro-single version14-24mm F2.8 DG DN | Art,Square horses a price8599Yuan,Whether it is LeicaSLCard or SonyEBayonet,Both offer high cost-effective super wide-angle lens selection,It can be said that there are still rooms that have been selected in these two bayons.,This time8599The price of yuan is a bit equivalent to“Shocking”a feeling of。in summary,Simbar14-24mm F2.8 DG DN | ArtNew products clearly have quite competitiveness。

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