Sigma 20mm 1: 1.4 DG Art Review

According provided by Sigma 20mm 1: 1.4 DG Art lens (Canon camera version) many thanks to Cheslav Lozovsky.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art


Navigation

  1. In short
  2. History / Alternatives
  3. Main Specifications
  4. Assembly
  5. Focusing
  6. Image quality
  7. Sample Photos
  8. My experience
  9. Prices
  10. All Sigma ART Lenses
  11. Results
  12. User Comments
  13. Add your review or question on the lens

Sigma 20mm 1: 1.4 DG Art will be abbreviated as 'Sigma 20 / 1.4 Art'. This review shows the version for SLR cameras Canon EOS with EF / EFS mount, but this lens is also available for Nikon SLR cameras with Nikon F mount, for Sigma cameras with SA mount, and for Sony mirrorless cameras with E (FE) mount. Cinema Lens Sigma CINE 20 T1.5 uses the same optical design as Sigma 20 / 1.4 Art.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

In short

The Sigma 20 / 1.4 Art is a unique high-aperture wide-angle / ultra-wide-angle lens for full-frame DSLR cameras. Very high for this focal length, aperture. Very high resolution in the center of the frame, high-quality assembly and fast focusing. The lens deserves due attention.

The use of Sigma 20 / 1.4 Art is quite specific. Basically, the potential of the lens can be revealed by experienced photographers who own full-frame cameras, who know exactly why they need high aperture and such a viewing angle.

Of course, the objective also has several obvious disadvantages, such as a large convex lens with the inability to use conventional protective filters and certain imperfections in the corners and edges of the image, but in general this does not spoil the impression of Sigma 20 / 1.4 Art.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

History / Alternatives

The Sigma 20 / 1.4 Art lens was introduced on October 16, 2015 and became a replacement for the older model. Sigma 20mm 1: 1.8 EX DG.

Sigma 20 / 1.4 Art became first lens of its kind. Before him, there were no other 20 / 1.4 class full-frame lenses.

But still, before the appearance of the Sigma 20 / 1.4 Art, there was one such lens in terms of the combination of focal length and aperture - LEICA SUMMILUX-M 1: 1.4 / 21 ASPH, which differed only by 1 millimeter of focal length. Truth, LEICA SUMMILUX-M 1: 1.4 / 21 ASPH does not have autofocus and is designed for rangefinder (mirrorless) full-frame cameras, while making a lens of this class for SLR cameras is a much more difficult task.

At the time of this review, there were no other 20 / 1.4 class lenses for photography. The closest solutions can be considered:

  1. Sigma 20mm 1: 1.8 EX DG and her predecessor Sigma 20mm 1: 1.8 EX DG asphericalunder different mounts
  2. Nikon N AF-S NIKKOR 20mm 1: 1.8G Nano Crystal Coat SWM RF ED Aspherical, only under Nikon F
  3. Manual TOKINA FIRIN 20 mm F2 FE MF, and autofocus TOKINA FIRIN 20 mm F2 FE AF for Sony mirrorless full-frame cameras with Sony E mount
  4. Manual Samyang 1:1.8mm ED AS UMCunder different mounts
  5. Manual Voigtlaender ultron 21 mm F1.8 ASPHERICAL, for rangefinder cameras with LEICA-M mount

The remaining lenses either have an aperture larger than F / 2.0, or a focal length greater than 21 mm, or are designed for cropped cameras, and therefore I did not include them in the list above. For cropped cameras, you can find many other solutions, for example, such as Samyang 21mm f / 1.4 ED AS UMC CS or Sigma 18-35mm 1: 1.8 DC Art.

It is also worth mentioning that in addition to the unique Sigma 20 / 1.4 Art, the company has an even more unique lens Sigma 14mm 1: 1.8 DG HSM Art

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

Main technical characteristics of Sigma 20mm 1: 1.4 DG Art:

Review Instance Name The lens barrel bears the following inscriptions '20mm 1: 1.4 DG Sigma A MADE IN JAPAN 015' + serial number. On the box SIGMA 20mm F1.4 DG A ART 015
Basic properties
  • DG - the lens is designed for full-length SLR digital cameras
  • HSM (Hyper Sabout nothing Motor) - ultrasonic focusing motor
  • AF / MF FOCUS - simple focus mode switch
  • SML (Super Multi Layer) - super multicoated optics
  • SLD (Special Low Dispersion) - use of elements with extremely low dispersion
  • FLD (Fluorite like Low Dispersion) - special low dispersion elements with fluorite properties
  • ASP (Aspenherical) - aspherical elements in the optical scheme
  • IF (Iinternal Focusing) - internal focus
  • Manual focus at any time (Canon FTM equivalent)
  • A (Art) - professional lens
  • TSC (Thermally Sbackgammon Composite) - part of the body made of thermally stable composite
  • Separate window focusing distance scale
  • Without the possibility of installing front threaded filters
  • Dock support for updating and adjusting the lens
  • Built-in petal hood
  • Important: a lens from a third-party manufacturer, which imposes some restrictions on its practical use
Front Filter Diameter no
Focal length 20 mm (diagonal viewing angle 94.5 °)

Zoom ratio 1 x (this fix lens, it does not have a zoom)
Designed by for full-format digital cameras. The lens is suitable for everyone. Canon EOS cameras
Number of aperture blades 9 petals
Tags focusing distance in meters and feet, bayonet mount mark
Diaphragm F / 1.4 to F / 16
MDF 27.6 cm, maximum magnification ratio 1: 7.1
The weight 950 grams (in my measurements 945.9 grams)
Optical design 15 elements in 11 groups

Optical design Sigma 20mm F1.4 ARTThe optical scheme uses:

  • 2 aspherical elements
  • 5 low dispersion elements
  • 2 low dispersion fluorite-like elements
Lens hood Built-in
Manufacturer country LENS MADE IN JAPAN (Lens made in Japan)
Production period from October 16, 2015
Price

On cropped cameras Canon EOS with APS-C sensor EGF lens will be 32 mm, which makes it very convenient for everyday use. In fact, Sigma 20 / 1.4 Art on cropped cameras Canon EOS with the APS-C sensor turns into a fast 35-tku.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

Assembly

All lenses of the Art series are made exclusively in Japan, even all their accessories (caps, cases, etc.) are also made in Japan. True, despite the fact that the lens belongs to the highest quality range ART, Sigma 20 / 1.4 ART does not have dust or moisture protection, there is not even a rubber O-shaped mount seal.

In general, the lens is perfectly assembled. Sigma 20 / 1.4 Art has metal mount mount. The focus ring is very wide and rubberized, pleasant to use. The body is mainly made of a special composite TSCThermally Sbackgammon Composite (Thermally Stable Composite), less sensitive to temperature extremes than regular polycarbonate. Such a composite allows to avoid deformation of the case with a large change in ambient temperature. Sigma manufactures all of its 'ART' lenses from this digging material.

The weight of Sigma 20 / 1.4 Art is almost a kilogram... In the hands, the lens feels like a solid thing. For the size of Sigma lenses, I have prepared small video on your Youtube channel.

The design of the Sigma 20 / 1.4 Art is reminiscent of other lenses in the Sigma Art line. Glossy surfaces on the lens body are quite easily soiled.

Diaphragm consists of 9 rounded petals and form a hole in the shape of a regular hexagon, while in the photographs in the blur zone, rather round discs of blur are obtained.

Lens supports firmware update and setup using a USB station, which can be purchased separately, or set up the lens in certified centers. In the review, my lens was without such a station.

Sigma 20 / 1.4 Art cannot use standard filtersthat are screwed into the thread near the front lens (there is simply no thread). The remaining 20 mm fixings can use ordinary filters. Also, Sigma 20 / 1.4 Art cannot use the filters that are installed behind the rear lens, the so-called gelatin filters.

Sigma 20 / 1.4 Art has built-in petal hood, which protects the front lens from mechanical damage, and also helps in side and back light.

Front cover no latches, it just fits snugly against the lens barrel.

The expensive lens comes in a very simple and small box. In the delivery set there are only covers, printing products and a small case.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

Focusing

The Sigma 20 / 1.4 Art uses an ultrasonic focusing motor to focus HSM (Hyper Sabout nothing Motor). Auto focus will work with any SLR camera Canon EOS. Most likely, mirrorless cameras with an appropriate adapter should not have any special problems.

Focus speed high. I noticed that the focusing speed is slightly dependent on the camera used and the lighting conditions. But, in any case, there are no complaints about the focusing speed.

Auto focus quite quiet.

I worked with the lens on the camera Canon EOS 5D Mark III с one of the best focusing systems. Focusing tenacity is high. I did not notice any focusing errors at all. But on the camera Canon EOS 750D (aka Canon Digital Rebel T6i, aka Canon Kiss Digital X8i) from 19-point advanced focusing system and Hybrid CMOS AF III for Live View focusing, focusing tenacity is noticeably lower, focusing misses occur. Focusing errors are unsystematic, on what they depend - I have not defined.

On camera Canon EOS 750D I checked the presence of the back and focus front at different focusing distances (infinity and MDF as well). The shots taken using the Live View mode (which theoretically does not suffer from back / front focus) were used as a measure. The lens suffers on this camera. Front focus (focuses closer than the subject, hi compatibility with Sigma). At the same time on Canon EOS 5D Mark III behaves in a completely different way.

Focusing ring rubberized, wide, in manual focus mode rotates approximately 100 degrees (slightly more than a quarter of a turn). When the extreme positions are reached, the ring does not rest, but continues to rotate slowly. It is convenient to aim manually. During manual focusing, a small sound is heard as 'plastic rubbing against plastic', while the ring rotates smoothly and quite pleasantly.

There is a focus mode switch 'AF-MF FOCUS' (auto focus / manual focus) on the lens body. During auto focus focus ring remains stationary. The lens supports continuous manual focus mode. The focus ring can be rotated even in auto focus AF mode. The mode is similar to the original Canon FTM mode. The principle of operation of the Canon FTM is described in detail in the review. Canon 24-105 / 4 L.

Lens has internal focus, the front lens remains stationary during focusing. Focusing occurs due to the movement of the rear group of lenses, the effect of dust absorption in this movement is minimal.

The closest focusing distance is 27.6 cm, and you can get the maximum magnification for 1: 7.1 macro photography, which is pretty good for an ultra wide-angle lens.

The lens has a window with a distance scale with marks in meters and feet. The scale is small, on it there are marks for 1, 0.6, 0.4, 0.276 meters and a label of 'infinity'. There is also a label with the depth of field scale, but only for the values ​​of F / 8 and F / 16. There is no tag for working in the infrared spectrum.

Other focusing features:

  1. on the distance scale, the focus ring has a slight 'overrun for infinity'. Sigma 20 / 1.4 Art does not have a hard stop (hard infinity mechanical stop) which allows you to accurately and quickly focus the lens at infinity under any external temperature conditions. For accurate aiming at infinity, you cannot just bring the focus ring to its extreme position.
  2. Focus shift (shift-focus) is missing.
  3. Sigma 20 / 1.4 Art has a small 'Focus Breathing' effect (changes in viewing angle during focusing).
  4. The lens does not support Sigma teleconverters
  5. Adapter compatibility unknown Canon mount adapter EF-EOS M for using optics with a bayonet mount Canon EF/Ef-s on cameras with a bayonet mount Canon EOS M
  6. Unknown compatibility with Canon Mount Adapters EF-EOS R for use with mount optics Canon EF/Ef-s on cameras with a bayonet mount Canon EOS RF

Important: Sigma 20 / 1.4 Art - a lens from a third-party manufacturer. It may happen that it will not work correctly with some Canon cameras.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

Image quality

Sigma 20 / 1.4 Art shows good image quality, with some of the flaws inherent in similar ultra-wide lenses with high aperture.

Sharpness

  1. in the center of the frame at F / 1.4, the lens shows good sharpness. Even at 24 megapixels of the cropped sensor, the lens behaves decently at F / 1.4
  2. there is a noticeable drop in sharpness to the edges of the frame at f / 1.4
  3. great resolution in the center of the frame on covered apertures after F / 2
  4.  resolution at the edges of the frame returns to normal on covered apertures after F / 4
  5. high contrast

Distortion

  1. barrel-shaped distortion
  2. the overall level of distortion is at a level typical for such lenses
  3. the nature of the distortion is simple, should be easily adjusted in the editors

Vignetting

  1. very strong vignetting on f / 1.4
  2. on APS-C cameras with a sensor vignetting almost disappears at f / 2.0
  3. vignetting easily fixable in the editor

Aberration

  1. open diaphragms have a moderate amount of chromatic aberration
  2. the strongest chromatic aberration visible at the edges and corners of the image
  3. there is small friging (HA in the blur zone)
  4. there is a noticeable coma in the corners and edges on open diaphragms

Rest

  1. on covered diaphragms you can achieve a beautiful effect of a 18-ray star
  2. the lens is good, and sometimes very well tolerates backlight. In rare cases, you can get a looped arc from a bright light source
  3. color rendering is neutral, pleasant
  4. blur discs are even enough even on covered diaphragms
  5. there is a lens profile for popular RAW converters
Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

Sample Photos

All sample photos in the gallery below were shot using a camera Canon EOS 5D Mark III and Sigma 20 / 1.4 Art. Photos taken using RAW ('.CR2') file conversion with Canon original utility Digital Photo Pprofessional 4 (Canon DPP) without any additional processing. The picture style used was' Standard (3, 0, 0, 0).

Original RAW ('.CR2') photos can be download from this link.

All sample photos in the gallery below were shot using a camera Canon EOS 750D (aka Canon Digital Rebel T6i, aka Canon Kiss Digital X8i) and Sigma 20 / 1.4 Art. Photos taken using RAW ('.CR2') file conversion with Canon original utility Digital Photo Pprofessional 4 (Canon DPP).

Let me remind you that the pixel density of Canon EOS 750D 20% higher than fifty megapixel Canon EOS 5Dsr/Canon EOS 5DS.

Original RAW ('.CR2') photos can be download from this link.

Many examples of this lens can be found on 500Px service.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

Prices

An average lens costs around $ 800. Actual prices can be viewed at the links below:

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

My experience

Sigma 20 / 1.4 Art pleasantly surprised me. Buy and shoot!

True, I do not like the lack of thread for filters. I shot on a snowy day, the snow fell and melted on the front lens. The lens is not mine, but because I quickly stopped mocking him.

Sigma 20 / 1.4 Art is very convenient to use on cropped cameras. If it were not for the large weight and high price, I would safely recommend it for cropped cameras as the best universal fixed-lens for every day for any tasks. Instead, it’s better for the cropped cameras to look away Sigma 30 mm 1: 1.4 DC HSM | A (Art).

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Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

All Sigma ART Lenses

The Sigma A (Sigma Art) lens range includes the following lenses:

DG

For full-frame cameras (series DG) with mount Nikon F, Canon EF, Sigma SA:

  1. Sigma 14 mm 1: 1.8 DG | A (Art), +L, +E, +Cine, 16/11, December 2017 [cost]
  2. Sigma 20 mm 1: 1.4 DG | A (Art), +L, +E, +Cine, 15/11, October 2015 [Price]
  3. Sigma 24 mm 1: 1.4 DG | A (Art), +L, +E, +Cine, 15/11, February 2015 [Price]
  4. Sigma 28 mm 1: 1.4 DG | A (Art), +L, +E, +Cine, 17/12, September 2018 [Price]
  5. Sigma 35 mm 1: 1.4 DG | A (Art), +L, +E, +A, +Pentax, +Cine, 13/11, November 2012 [Price]
  6. Sigma 40 mm 1: 1.4 DG | A (Art), +L, +E, +Cine, 16/12, September 2018 [Price]
  7. Sigma 50 mm 1: 1.4 DG | A (Art), +L, +E, +A, +Cine, 13/8, January 2014 [Price]
  8. Sigma 70 mm 1: 2.8 DG MACRO | | | A (Art), +L, +E, 13/10, February 2018 [Price]
  9. Sigma 85 mm 1: 1.4 DG | A (Art), +L, +E, +Cine, 14/12, September 2016 [Price]
  10. Sigma 105 mm 1: 1.4 DG | A (Art), +L, +E, +Cine, 17/12, February 2018 [Price]
  11. Sigma 135 mm 1: 1.8 DG | A (Art), +L, +E, +Cine, 13/10, March 2017 [Price]
  12. Sigma 12-24mm 1: 4 DG | A (Art), 16/11, November 2016
  13. Sigma 14-24mm 1: 2.8 DG | A (Art), 17/11, February 2018 [Price]
  14. Sigma 24-35mm 1: 2 DG | A (Art), +Cine, 18/13, January 2015 [Price]
  15. Sigma 24-70mm 1: 2.8 DG OS | | | A (Art), 19/14, February 2017 [Price]
  16. Sigma 24-105mm 1: 4 DG OS | | | A (Art), +A, 19/14, October 2013 [Cost]

DG DN

For full-frame mirrorless cameras (series DG DN) with bayonet Leica l и Sony E:

  1. Sigma 14 mm 1: 1.4 DG DN | A (Art), 19/15, June 2023
  2. Sigma 15 mm 1: 1.4 DG DN | A (Art) Fisheye, 21/15, February 2024
  3. Sigma 20 mm 1: 1.4 DG DN | A (Art), 17/15, August 2022 [Price]
  4. Sigma 24 mm 1: 1.4 DG DN | A (Art), 17/14, August 2022 [Price]
  5. Sigma 35 mm 1: 1.2 DG DN | A (Art), 17/12, July 2019 [Price]
  6. Sigma 35 mm 1: 1.4 DG DN | A (Art), 15/11, April 2021 [Price]
  7. Sigma 50 mm 1: 1.2 DG DN | A (Art), 17/12, March 2023
  8. Sigma 50 mm 1: 1.4 DG DN | A (Art), 14/11, February 2023 [Price]
  9. Sigma 85 mm 1: 1.4 DG DN | A (Art), 15/11, August 2020 [Price]
  10. Sigma 105 mm 1: 2.8 DG DN MACRO | A (ART), 12/7, October 2020 [Price]
  11. Sigma 14-24mm 1: 2.8 DG DN | A (Art), 18/13, July 2019 [Price]
  12. Sigma 24-70mm 1: 2.8 DG DN | A (Art), 19/15, November 2019 [Price]
  13. Sigma 24-70mm 1:2.8 DG DN II | A (Art), 19/15, May 2024
  14. Sigma 28-45mm 1: 1.8 DG DN | A (Art) +CINE, 18/15, June 2024
  15. Sigma 28-105mm 1: 2.8 DG DN | A (Art), 18/13, September 2024

DC

For cropped SLR cameras (series DC) with mount Nikon F, Canon EF, Sigma SA:

  1. Sigma 30 mm 1: 1.4 DC | A (Art) +Pentax, +A, 9/8 [1 ASP], January 2013 [Price]
  2. Sigma 18-35mm 1: 1.8 DC | A (Art) +Pentax, +A, +Cine, 17/12 [5 SLD, 4 ASP], April 2013 [Price]
  3. Sigma 50-100mm 1: 1.8 DC | A (Art) +Cine, 21/15 [4 SLD, 3 FLD, 1 HRI], February 2016 [Price]

DN

For cropped mirrorless cameras (series DN) for Micro 4/3 and Sony E:

  1. Sigma 19 mm 1:2.8DN | A (Art), black/silver, 8/6 [3 ASP], January 2013 [Price]
  2. Sigma 30 mm 1:2.8DN | A (Art), black/silver, 7/5 [2 ASP], January 2013
  3. Sigma 60 mm 1:2.8DN | A (Art), black/silve, 8/6 [1 ASP, 1 SLD], January 2013

Abbreviations:

  • +L means that there is a version of the lens adapted to work on mirrorless cameras with a bayonet mount Leica l
  • +E means that there is a version of the lens adapted to work on mirrorless cameras with a bayonet mount Sony E/Sony FE
  • + Pentax means that there is a version of the lens with a Pentax K mount (rare)
  • +A means that there is a version of the lens with Sony A mount (rarity)
  • + Cine means that there is a version of the lens adapted for video shooting, usually CINE versions are released simultaneously for ARRI PL, Canon EF and Sony E
  • black / silver - case available in black (black) and silver (silver)
  • 19 / 15, 7 / 5 and similar designations indicate the number of optical elements and groups in the optical scheme of the lens

Additionally, you can look at all lenses SIGMA CONTEMPORARY (C) и all lenses SIGMA SPORT (S). Here here there is a short video about the rulers and markings of Sigma lenses.

Sigma 20mm 1: 1.4 DG Art

Sigma 20mm 1: 1.4 DG Art

Results

The Sigma 20 / 1.4 Art is a good and even excellent lens. At the time of review has no other direct competitors.

Advantages

  1. high, record aperture for a lens with such a focal length
  2. Dock support for adjusting the lens
  3. convenient manual focus
  4. there is a window with a scale of focusing distances
  5. internal focus
  6. fixed focus ring during auto focus
  7. good build quality
  8. depth of field scale, no focus shift
  9. nine-petal diaphragm
  10. good optical performance, excellent sharpness starting with F / 1.4 in the center of the frame. Moderate level of basic optical distortion (aberration, vignettingdistortion)

Disadvantages

  1. big weight
  2. there is no possibility to install standard threaded filters near the front lens
  3. no slot for rear gel filters
  4. USB docking station needs to be bought separately
  5. no all-weather protection (not even an O-shaped rubber mount seal)
  6. focusing errors with some cameras (front-focus on 750D)
  7. slight effect of 'Focus Breathing' (decrease in viewing angle during focusing towards MDF)
  8. there is no tag for working in the infrared spectrum, the depth of field and focusing distances are small
  9. there may be incompatibility with some cameras and / or teleconverters (no exact data)
  10. lack of data about the lens in modern cameras, which makes it difficult to automatically correct some types of optical distortion (distortionvignetting etc.)
  11. certain image flaws inherent in similar lenses. First of all, vignetting and coma in the corners of the image

Material prepared Arkady Shapoval.

Add a comment:

 

 

Comments: 50, on the topic: Review Sigma 20mm 1: 1.4 DG Art

  • Alexey

    Ideal lens for astro photo.

    • Czeslaw

      As the owner of this glass, I will say that it is not ideal for astrophotography. When I was sitting on the FF from Nikon, I had Tamron 15-30 2.8 available, which is more suitable for astrophotography

      • Nicholas

        Sigma 17-35 f / 2.8-4 did not use by accident?

        • Czeslaw

          Nope, not used

      • Boris

        And what about the Nikon 20 / 1.8G? I choose a shirik for astrophotography. Will 20mm be enough, or save up for 14mm?

    • Michael

      Ideal for astrophotography - no coma and strong vignette

  • Jury

    DSC8477 it's on the d800

    • Alexander

      There is no sharpness at all ... Why 59 pieces ...? Quite already people are being held for idiots ...

      • Czeslaw

        That nunafig, sharpness enough for the eyes.

      • Jury

        the photo above was taken almost at MDF, there the flu is very small, perhaps that’s why the sharpness is striking, but really, you can shoot night landscapes by 1,4, here’s an example, though not night DSC7480

        • Boris

          A good example with a tip to infinity! With f / 1,4, a definitely cool Sigma instance. Sharpness in one plane, which is very good. Just wondering, is this camera jpeg or raw processing? Raw usually produces sharper clarity.
          In general, thanks for the examples, I shoot such scenes before buying new lenses to check the drawing. And my camera is similar - d800e, we can say that I tried the lens without buying it.

          • Jury

            this particular photo is camera jpeg, the rest are processed in Capture One. Glad I helped a little :)

            • Boris

              Wow, the answer hasn’t come so fast yet!
              If I ask a little off topic, what needs to be done to make tools, sliders, etc. work in Capture One? I tried to install C1 of different versions, from 7.1 to modern, and the tools are always inactive, only viewing. A laptop with Windows 10. Thanks, if you help me figure it out

              • Jury

                I wanted to help, but I can't. The tools are inactive, if the program is launched in catalog mode, if you run it in session mode, then everything works fine, only the trial should be reset once a month. I decided to repeat my installation on a "clean" computer - the first time the software is launched in session mode, but after rebooting, it is launched in directory mode with all inactive tools. I never figured out why, on my working laptop it always starts up in session mode and everything works. C1 is a good software, if I were a photographer, I would definitely buy it for Nikon :)

        • Novel

          I've always been interested in one question. Why on a lens for 800 bucks to shoot a dull city landscape in the winter to estimate sharpness? Why full-frame shirik on crop? Well and so on.

      • Jury

        f 2.2, evening, the frame is cropped above and below DSC7951

        • B. R. P.

          Sumy, or something.

          • Jury

            Yes :)

  • Vladimir

    I looked at this lens for a long time and still decided to take the Nikon 20 / 1,8.

  • Paul

    Sigma engineers conjure outside Hogwarts!

  • ñ

    thanks for the pictures
    bokeh ... well, this is not worth his own)

  • anonym

    Hello everyone, tell me how to use the camera in the cold? What to do with the camera when you come home from a cold? In general, what are the rules for use in the cold and after?

    • Czeslaw

      The basic rule: do not let the camera heat up quickly - it is fraught with condensation. Well, if it is very cold, keep the batteries in your pocket so that they do not discharge quickly. Also, some glasses can become dull, as the grease thickens. But in general, that's all ...

    • B. R. P.

      Arkady has a couple of articles about shooting in the cold, look.

  • Vasyl

    There is also a daylight for svitlofiltryv. Tse for a reason. Zvychayni svitlofiltri do not come - with them in such ultra-wide-housed about, active vintuvannya will be wild. The slopes, changing through the center and through the edges of the line, will be small. Required special lighting, with compensatory thickening (on the edges of the lights, in the center of the dark).

  • Jury

    It's night f 2.2 DSC7955

  • Alexey de Paris

    Great review as always! I am not a fan of shirikov and now I do not often shoot them. I can say for sure that shirik must be loved and able to shoot on it. Here you need to have imagination and clearly see the plane and field of shooting. That’s why I’m doing a bunch of takes so that at least something happens on the lens wider than 24 mm.

    • Carl Zeiss

      I, too, was not a fan of shirikov. Until gradually I came to the opposite. To take pictures in the city and indoors without a shirk, it is to rob oneself of oneself for interesting shots. The only thing I regret is that I did not immediately understand this.
      As for this lens, it is quite expensive for its size, or bulky for its cost. Sigma began to produce good lenses in its Art line. But personally, I would prefer the system counterpart. And to prevent this from happening, Sigma must take either at a noticeably low price or outstanding performance. In this lens, neither one nor the other she took me. So I prefer to stay at the system wide-aperture widths. Plus or minus the luminosity step will not play a role there. But the system unit is stronger, more familiar in terms of interaction with the carcass, outwardly prettier, there is a rubber ring near the bayonet mount, you can wind protective filters on the front glass ..

      • Alexey de Paris

        fully support! I only buy sigma if I buy a BU for a normal price. Of course, the new thing is nice, but with such a set of traditional Sigma pigtails out of the box, the lens no longer seems new!

  • anonym

    Guys this is a great lens. If anyone needs to sell his Nikon.

    • Oleg

      The lens is so beautiful that they decided to sell? Is he too good for you?

  • anonym

    Well, to get a kilogram lens is recommended for every day :-)

    • Andrei

      The choice is yours!
      Here nobody calls you to anything.

  • Anatoly Snezhan, Gomel

    The lens, unfortunately, is both heavy and, most importantly, unreasonably expensive. Therefore, I only skim through such reviews - why waste time to no purpose?

    • Arkady Shapoval

      that is, do not do them?

      • Novel

        To do naturally. Get used to it, Arkady, soon someone and Helios-44 will be an inadmissible luxury. And you have one of the few Russian-language resources for a variety of optics.

  • Anatoly Snezhan, Gomel

    I am sure that in the next 20 years there will be self-destruction of large and small productions of all new DSLRs and lenses. Forever and ever. Large - from 0.2 - 1,5 kg cameras and large glasses - from 400 g and up to 3 kg and more - have long been unnecessary for most photo professionals and amateurs. Have outlived theirs.
    Photo equipment (amateur and professional - any!) Should be pocket-sized, moderately compact - that's how my first film cameras - Smena-2, Agat, Chaika-2. He received the latter in 1970, during his military service, for winning the competition for the best photo reportage among the military correspondents of the KDVO (he served as an urgent service in the Khabarovsk and Primorsky Territories).

    • Novel

      Photographic equipment owes nothing to anyone. It is a fast shirik with its own range of tasks, covering a full frame - it cannot be less. Compare, damn it, 20 / 1,4 with 40 / 4,5. You already have compact photo equipment - a mobile phone. Shoot at dusk on its tiny matrix with eerie noises or with software bokeh, forward.

      Show me something light like 300 / 2.8 or 600/4 for shooting animals or sports? Yes, not everyone needs it, but those who need it will buy it. Some kind of heresy.

  • Andrei

    Bought this lens on the eve of the New Year.
    There are no comments on the quality of the picture. Everything is as described above.
    I use with Nikon D7500

    On the very first day of shooting, one and a very significant drawback was found for me. Autofocus freezes at low temperatures (even at -3) after 10-15 minutes of being outdoors. Fortunately, focus confirmation works in the camera.
    Now I am waiting for a visit to the SC

    • Jury

      On December 31, my lens, when trying to shoot for a long time on the street, at -6 ..- 7 degrees, was fogged up inside, and, with poor street lighting, it seemed that the front lens was fogged up, but it turned out not. He took it off, in the hope that this is a lens on the side of the lens mount, but also not :). As a result, I got such a soft effect in the center of the frame. Autofocus yes, freezes. But is it needed if the lens is fogged up inside, that’s the question. DSC-1986

      • Alxmonkey

        This is a jamb, they gave it to the SC?

        • Jury

          to be honest, I didn't even think about it. The lens in the room has returned to normal (fogging is gone), it will not be possible to avoid fogging in the future, because the lens has no moisture protection, changing the lubricant for autofocus operation - I see no point, because I don't need a lens much outside in winter. I wonder if Sigma has any authorized services in Ukraine? maybe someone came across.

          • Sergiy

            In Ukraine, no one is engaged in sigma at all. I wanted to correct autofocus in my 85 art. All Kiev services were refused and confirmed that no one was engaged in them in Ukraine.

  • Nicholas

    People, (Nikonov, to be more precise) don't bother with 24mm f / 1.4G I've been using for 3 years - there is no alternative. Recently (4 months ago) I bought 24-70 2.8 E, excellent, no doubt, but ... This BUT usually spoils everything, 24 1,4 will be better (for 24, of course). Although, of course, suum cuique (lat.)

  • Jury

    D800 + Sima20 1.4Art, a small crop. 31.12.2019/XNUMX/XNUMX

  • Jury

    D800 + Sima20 1.4Art, a small crop, removing excess and adding snow, 31.12.2019/XNUMX/XNUMX. There was good wet snow with rain (closer to the rain), the lens survived.

  • Alexander

    Good afternoon, nothing is said about the predecessor here in this review - what about the Sigma 20mm 1: 1.8 EX DG, how do these lenses compare to each other?

    • B. R. P.

      Quote: “The Sigma 20 / 1.4 Art lens was introduced on October 16, 2015 and is a replacement for the older Sigma 20mm 1: 1.8 EX DG.” )

      • Alexander

        I will specify how the lens of this review has become better than its predecessor, what is the difference between them, is there any point in buying a predecessor?

        The fact is that the choice of a wide-angle lens for a full frame is a sore point and everyone finds out something for themselves. Perhaps it makes sense for Arkady to write a review article about this topic: "" How to break your brain or choosing a wide-angle lens "

        • B. R. P.

          Yes you are right.

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