SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D) review

According provided by SIGMA ZOOM 18-50mm 1: 2.8 EX DC D lens (Nikon version) many thanks To sable Vladimir.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D). The lens is shown in film slr camera Nikon EL2


  1. Browse Navigation
  2. In short
  3. Main Specifications
  4. Assembly
  5. LOCK Button
  6. Focusing
  7. Image quality
  8. Sample Photos
  9. Alternatives
  10. My personal experience with the lens
  11. Results
  12. User Comments
  13. Add your review or question on the lens

In review lens SIGMA ZOOM 18-50mm 1: 2.8 EX DC D I will call in abbreviated form - Sigma 18-50 / 2.8 EX. This review shows the version for cameras Nikon DX Series, in its name, written on the lens barrel, it has an additional 'D' prefix (next to the gold lettering 'EX'). Lens versions for Canon, Pentax, Sigma and 4/3 cameras are deprived of this letter.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

In short

The Sigma 18-50 / 2.8 EX is a professional high-aperture zoom lens of universal directivity with a very convenient range of focal lengths. Sigma 18-50 / 2.8 EX - an alternative to the original super-lens Nikon 17-55 / 2.8G.

Please note that this review shows the very first version of the Sigma 18-50 / 2.8 class lens, announced in 2004, it is easy to distinguish from subsequent models Sigma DC 18-50mm 1: 2.8 EX MACRO и Sigma DC 18-50mm 1: 2.8 EX MACRO HSM by the name of the lens, which is written on the frame of the front lens for this model. The Sigma 18-50 / 2.8 EX dates back to the era of lenses, when it was customary to write the prefix 'ZOOM' in the names of Sigma lenses.

Choosing a versatile fast zoom lens is a very important step in the lives of countless photographers, especially those who have to shoot a variety of subjects. The Sigma 18-50 / 2.8 EX can be a budget solution for such tasks.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

Main technical characteristics of SIGMA ZOOM 18-50mm 1: 2.8 EX DC:

Review Instance Name Next to the front lens 'SIGMA ZOOM 18-50mm 1: 2.8 EX DC Ø 67 LENS MADE IN JAPAN'. The lens barrel bears the following inscriptions 'SIGMA DC 18-50mm 1: 2.8 EX D' + serial number
Basic properties
  • DC (Digital Camera) - the lens is designed for SLR cameras with an APS-C sensor, in this case it is an analogue 'Nikon DX'
  • EX (EXcellent) - the highest quality professional lens
  • Auto focus using the camera motor, analogue Nikon AF
  • 1:2.8 - fast lens with a fixed maximum aperture over the entire range of focal lengths
  • LOCK - button for fixing the zoom ring at 18 mm.
  • D (Distance) - the lens transmits the focusing distance to the camera, analog 'Nikon D'
  • ZOOM - zoom lens with variable focal length
  • IF (Iinternal Focusing) - internal focus
  • SML (Super Multi Layer) - super multicoated optics
  • ASP (Aspenherical) - aspherical elements in the optical scheme
  • SLD (Special Low Dispersion) - special low dispersion elements in the optical scheme
  • Lack of aperture control ring, analog 'Nikon G'
  • Bayonet hood included
  • 5 pins microprocessor
  • Important: a lens from a third-party manufacturer, which imposes some restrictions on its practical use
Front Filter Diameter 67 mm
Focal length 18-50 mm EGF for Nikon DX cameras is 27-75 mm
Zoom ratio 2.78 X (usually rounded to 3)
Designed by for Nikon DX digital cameras, there are modifications for other systems (Sigma, Canon, Pentax, 4/3)
Number of aperture blades 7 petals
Tags focusing distance in meters and feet, focal lengths for 18, 24, 28, 35, 50 mm, mark of bayonet mount and mount / fix hood.
Diaphragm control is via the camera menu (analog Nikon G - lens type) F / 2.8-F / 22 aperture over the entire focal length range
MDF 0.28 m, maximum magnification ratio 1: 5
The weight 445 g
Optical design 15 elements in 13 groups. The scheme includes:

  • 2 aspherical ASP elements (one molded glass, one hybrid)
  • 1 low dispersion element SLD

No reliable optical image found.

Lens hood Bayonet type, plastic, with the possibility of installation in transport mode
Manufacturer country LENS MADE IN JAPAN (Lens made in Japan)
Production period Since July 20, 2004. In September 2006 replaced by Sigma DC 18-50mm 1: 2.8 EX MACRO

Sigma 18-50 / 2.8 EX is very similar to a lens Tamron Aspherical LD ​​XR DI II SP AF 17-50mm 1: 2.8 [IF], but still the Sigma 18-50 / 2.8 EX is much better. The difference in viewing angles between 17mm and 18mm focal length is not felt. Also, I would like to draw your attention to the fact that 50 mm of focal length for these lenses is available only during focusing to infinity, while focusing towards MDF, the angle of view increases, and the focal length decreases due to the 'Focus Breathing' effect.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)


Sigma 18-50 / 2.8 EX was made in Japan. To the touch the lens is pleasant, strong, weighty. The retractable frame of the case ('trunk') consists of one section, which is quite durable. The zoom ring has a small backlash that does not affect usability. This backlash is most likely constructive than acquired during use.

All parts of the body are covered with characteristic Sigma velvet, which has the property of quickly getting dirty and rubbing.

The design and body size of all similar Sigma lenses is the same or very similar. This makes it easy for Sigma to control production and reduce the cost of components.

The lens has metal bayonet mount. The zoom and focus rings are rubberized. Changing the focal length runs smoothly.

There is a bayonet mount mark and a mark on the case for quick installation of the hood. The lens uses a plastic hood, which is fixed in special grooves located near the front lens of the lens. The hood can be installed in the opposite direction for transportation. In this position, access to the focus ring at 18 mm focal length is lost. When you change the focal length, the lens hood moves with the front of the lens.

When changing the focal length, the rear lens moves in the middle of the lens body like a pump - it draws in and pushes out air. This behavior of the rear lens is called 'vacuum cleaner effect', which can increase the amount of dust that accumulates in the camera.

Number of petals aperture - 7 pieces. At the same time, they are weakly rounded and form an irregular heptagon on strongly covered diaphragms.

For Sigma 18-50 / 2.8 EX, the direction of rotation of the zoom and focus rings does not match the direction of the original Nikon 17-55 / 2.8G.

It is believed that this is a lens from a professional range of the highest quality. Unfortunately, the lens has no dust or moisture protection. Also, many professional lenses use classic 77 mm filters, 72 and 82 mm less often. Sigma 18-50 / 2.8 EX has filters with a diameter of 67 mm, which is not always convenient.

I want to separately note that despite the good assembly of the Sigma 18-50 / 2.8 EX, the overall reliability of the lens is much inferior to the original metal monster Nikon 17-55 / 2.8G.

It should be noted separately that the sample from the review has practically erased the golden 'EX' marking, real irony, since this abbreviation should be responsible for the highest level of quality of the lens. The 'Sigma DC' lettering is also pretty worn out. The lens from the review is a little buggy - sometimes it incorrectly indicates the value of the focal length in EXIF (most likely there are some problems with the indicator plates and their brushes, apparently they just got worn out and became less sensitive to the position of the zoom ring). And one more trifle - when changing the focal length, the zoom ring can rub against the focusing ring and rotate with it (critical during manual focusing).

It's important: Some lenses have the 'SIGMA DC' lettering in full gold, some have only 'DC' in gold lettering. I do not distinguish them in separate sub-versions. Drawing with differences.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

Lock 'LOCK ′

The frame (trunk) of the Sigma 18-50 / 2.8 EX does not spontaneously change its size under its own weight (perhaps this only begins with time). On the lens case there is a switch-lock focal length 'LOCK' (the so-called 'lock'), which tightly locks focal length at a value of 18 mm.

To fix the trunk of the lens, you must first set the 18 mm focal length. Near the button there is a drawn arrow that indicates in which direction the switch should be moved to lock the lens.

The switch is located in a convenient place - under the thumb of the left hand, so the lens can be quickly and comfortably 'removed from the lock' before starting shooting.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)


It's important: auto focus with this lens is available only when using him on cameras with built-in motor focusing.

Exact list Nikon DSLR cameras with a built-in focus motor, on which this lens will focus automatically:

Exact list Nikon DSLR cameras without a built-in focus motor, on which this lens will not focus automatically:

Only auto focus and sound confirmation of focus will not work with these cameras, all other important functions, such as automatic exposure metering and automatic iris control, will work well.

You will find a lot of useful information on the types of cameras and lenses Nikon here.

Nikon's first camera to not have inboard motor focusing has become Nikon D40introduced two years later than the Sigma 18-50 / 2.8 EX lens. Therefore, Sigma cannot be blamed for initially releasing its lens for Nikon cameras without inboard motor focusing. Later, Sigma 18-50 / 2.8 EX was updated to a version with a built-in focusing motor - Sigma DC 18-50mm 1: 2.8 EX MACRO HSM. I also remind you that even Nikon itself managed to release one (only one) camera lens Nikon DX Series (i.e. for crop) without a focus motor, it was an old man Nikon DX AF Fisheye Nikkor 10.5mm 1: 2.8G ED. Absolutely all other lenses for cameras Nikon DX have a built-in focus motor.

When used on a camera Nikon D90 with unpretentious Multi-CAM 1000 focusing system the lens behaves well. With precision and clinging focus, I had no particular problems. The lens clings well to captured subjects, rarely re-focusing. The number of focus misses is neither large nor systematic. In general, usually non-motorized lenses rarely have autofocus problems.

Auto focus speed average, comfortable for the vast majority of photo tasks. Focus speed is significantly lower than that of Nikon 17-55 / 2.8G. Let me remind you that Nikon 17-55 / 2.8G so far it is the fastest original lens in the Nikon DX series (it uses a large and powerful ring SWM motor).

Focusing on the Sigma 18-50 / 2.8 EX internal - when focusing, neither the front nor the rear lens rotates, and the lens itself does not change its size when focusing. Sorry, but during auto focus focus ring rotates and cannot be touched. In such Nikon lenses, the focus ring remains stationary during auto focus (focus modes M / A or similar).

In manual focus mode, the focus ring rotates approximately 45 degrees. Manual focus is quite inconvenient. When extreme positions are reached, the focus ring abuts and cannot be rotated further.

The minimum focusing distance is 28 cm (the distance from the camera’s sensor to the subject). With such an MDF, the maximum magnification factor is 1: 5 (exactly the same coefficient uses Nikon 17-55 / 2.8G). Shooting small objects is easy, but there is no need to talk about real macro photography.

Sigma 18-50 / 2.8 EX does not have a focus mode switch. To translate the lens into manual focus on cameras with motor For focusing, use the focus mode switching lever located near the camera mount. For cameras without motor Only manual focus mode will always be available for focusing.

Focus Features:

  • There is noise from autofocus.
  • There is a strong effect of 'Focus Breathing' (changing the viewing angle during focusing). During focusing towards MDF, the viewing angle increases.
  • When changing the focal length, focusing is a bit confused.
  • Unknown compatibility with teleconverters.
  • Sigma 18-50 / 2.8 EX does not have hard stop (hard infinity mechanical stop) which allows you to accurately and quickly focus the lens at infinity under any external conditions.
  • The lens has a focus distance scale with marks in meters and feet. The scale is plotted on the focus ring. The scale is very meager, on it there are marks for only 5 values ​​of the focusing distance (including 'infinity'). More advanced lenses usually use a scale in the form of a special window.
  • Focus shift (shift-focus) was not noticed.
  • Sigma 18-50 / 2.8 EX has no focus problems in Live View mode (tested on Nikon D90 ), but it focuses very slowly and uncertainly (the bigger problem is the Live View mode with focusing in contrast).
  • The lens transmits the focus distance to the subject in the camera (analog Nikon D, Nikon G).
  • The direction of rotation of the focus ring does not match the original Nikon 17-55 / 2.8G.
  • Sigma 18-50 / 2.8 EX is a third-party lens. It may happen that it will not work correctly with some Nikon cameras. Details on this issue are considered by me. here.
SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

Image quality

In general, Sigma 18-50 / 2.8 EX, as for a lens of its class and age, is optically not bad, but still there are a couple of weak points.


  • confident sharpness at open apertures in the center of the frame over the entire range of focal lengths
  • no noticeable drop in sharpness during zoom
  • poor sharpness at the edges of the frame at 18mm & f / 2.8
  • very weak picture at the corners of the frame at 18mm & F / 2.8 (this major flaw optical qualities of this lens)
  • good / excellent resolution in the center of the frame on covered apertures (in the F / 5.6-F / 10 region) over the entire range of focal lengths


  • the overall level of distortion is at a level typical for such lenses
  • pretty strong distortion only visible at 18 mm
  • distortion practically absent and imperceptible in the range of 24-50 mm
  • in the wide-angle range, the nature of the distortion barrel-shaped
  • the nature of distortion is unified, easily corrected in the editor


  • general level vignetting is at the level typical for such lenses
  • noticeable vignetting observed throughout the range of focal lengths and f / 2.8
  • the strongest vignetting appears at 18mm & f / 2.8 when focusing on MDF
  • vignetting amplified with focus towards MDF
  • vignetting practically disappears at F / 4-F / 5.6
  • vignetting easily fixable in the editor, especially when shooting in RAW


  • there is a noticeable amount of aberrations on F / 2.8
  • the strongest chromatic aberration noticeable at 18mm & f / 2.8 at the edges and corners of the image (they also eat up most of the details)
  • when closing to F / 4-F / 10 HA are slightly reduced
  • general level HA slightly worse than similar lenses


  • pronounced effect of a 14-ray star on strongly covered diaphragms
  • a small amount of glare in the backlight, a slight drop in contrast in the side light. Immunity is at the level typical for such lenses.

Please note that this lens was released at a time when only Nikon D1 cameras existed on the market, D1h, D1x, D100, D2h, D70 with a very small maximum number of megapixels (not more than 6 MP, interpolated 10 MP with Nikon D1X not count). Most likely at that time, the Sigma 18-50 / 2.8 EX lens was not designed to work with cameras with 24 or more MPs. In the same time Nikon 17-55 / 2.8G It is an even older lens and works wonderfully with modern camera models.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

Sample Photos

Camera shots Nikon D90. The photos in the gallery below are shown without processing, converting the source RAW files with the original Nikon Capture NX-D utility without making any additional adjustments.

Original '.NEF' (RAW) photos from the camera Nikon D90 can download from this link (600 Mb). Please note that the focal length in EXIF may be erroneous due to lens malfunction.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

My experience

Suddenly, one JPEG file with Sigma 18-50 / 2.8 EX, obtained by directly converting the original RAW file, weighs more than the original. Example. I occasionally see this, but very rarely, and the differences are usually not so big. There are several reasons for this: RAW compression, an excess of detail in the image, structure difference RAW and JPEG. Indirectly, this indicates a high resolution lens (for such conditions).

Sigma 18-50 / 2.8 EX appeared a year later than the original Nikon 17-55 / 2.8G. Unfortunately, the Sigma 18-50 / 2.8 EX is just a miserable semblance of a super lens Nikon 17-55 / 2.8G. I should note that despite the fact that Nikon 17-55 / 2.8G was the very first fast-moving universal zoom lens for cropped cameras; to this day it remains one of the best of its kind. In terms of build quality, he has no equal.

But the Sigma 18-50 / 2.8 EX should be given its due - this is the first such lens from a third-party manufacturer. Tamron, Tokina, Canon, Pentax companies have been slowing down for several more years with the release of such a solution (see the time of the announcement of this or that similar lens in the section 'Alternatives').

I am pursuing the idea that the photographer should have one good, high-speed universal lens for a wide range of tasks. In real life of a photographer, such a lens can often help a lot, especially at certain stages of the photographer’s development. The station wagon is the basis with which you can 'survive' in almost any photo task. To this basis, then it is worth adding other creative / artistic / special lenses of a narrower specialization.

Nevertheless, those who are looking for a fast wagon, I recommend that you first look at the original lenses. After them, look at the versions with a stabilizer from third-party manufacturers, and there are not many of them. At the time of this writing, these are only Sigma DC 17-50mm 1: 2.8 Zoom EX OS HSM (highly recommend this lens) and Tamron Di II SP 17-50mm F / 2.8 VC B005.

If you have to choose between inexpensive non-motorized lenses Tamron 17-50 / 2.8 A16, Promaster 17-50 / 2.8, Tokina 16-50 / 2.8, then I give preference to Sigma 18-50 / 2.8 EX or its subsequent updates.

The range of 18-50 mm is very convenient, it is not for nothing that it is used among whale lenses of the 18-55 class. Compared to whale lenses such as Nikon 18-55 / 3.5-5.6G VR AF-P, Sigma 18-50 / 2.8 EX is two steps lighter at the long end (F / 5.6 vs F / 2.8), which gives a gain in shutter speed 4 times. For moving lenses, this is a significant difference. Unfortunately, the range is 18-50 (EGF 27-75mm) is almost standard (in terms of set of focal lengths) and poorly suited for some creative photo tasks. Nevertheless, this range allows you to perfectly implement the daily routine work of a photographer, and from this range, with grief in half, you can shoot almost anything.

Questions regarding the torment of choosing a lens, leave in the comments, I will try to help.

Comments on this post do not require registration. Anyone can leave a comment. Many different photographic equipment can be found on AliExpress.

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

All fast universal zoom lenses

Below is a list of all such aperture-type universal zoom autofocus lenses for SLR and mirrorless cameras with an APS-C sensor or less.

Tokina (DX, various mounts)

  1. Tokina AT-X PRO SD 16-50 F2.8 DX Internal Focus, model AT-X 165 PRO DX, for Canon (C/EF version) and Nikon (N/AIS version), from July 2006. Optical design is the same as Pentax SMC DA* 16-50mm f/2.8 ED AL (IF) SDM

Tamron (DI II, DI III-A, various mounts)

  1. Tamron Aspherical LD ​​XR DI II SP AF 17-50 mm 1: 2.8 [IF], model A16 N / E / P / S (under Nikon [N], Canon [E], Pentax [P], Sony / Minolta [S]), since February 2006. Produced in Japan, China and Vietnam
  2. promaster DIGITAL XR EDO AF Ashperical LD ​​[IF] 17-50 mm 1: 2.8 MACROprevious lens under the brand Promaster
  3. Tamron Aspherical LD ​​XR DI II SP AF 17-50 mm 1: 2.8 [IF], model A16 NII (only for Nikon cameras), since March 2008
  4. Tamron Di II SP 17-50 mm F / 2.8 VC B005, model B005 E / NII (for Canon [E] or Nikon [NII]), from September 2009, Japan or China)
  5. Tamron 17-70 mm F / 2.8 Di III-A VC RXD Model B070, Model B070, Sony E only, from December 2020

Sigma (DC, different mounts)

With constant maximum aperture (DC EX and DC ART series):

  1. Sigma DC ZOOM 18-50mm 1: 2.8 EX (+ -D), since July 2004, for Sigma SA, Nikon F, Canon EFS, Pentax K. The version for the '4/3' system has been available since February 2006 (not mass-produced). The version for Nikon in its name includes the prefix 'D'.
  2. Sigma dc 18-50mm 1: 2.8 EX MACRO, since September 2006, for Sigma SA, Nikon F, Canon EFS, Pentax K, 4/3
  3. Sigma dc 18-50mm 1: 2.8 EX MACRO HSM, since June 2007, for Nikon DX cameras only (Nikon F mount)
  4. Sigma dc 17-50mm 1: 2.8 ZOOM EXOS HSM, from February 2010, for Sigma SA, Nikon F, Canon EFS, Pentax K, Sony / Minotla A
  5. Sigma dc 18-35mm F1.8 A [ART, HSM], from April 2013, for Sigma SA, Nikon F, Canon EFS, Pentax K, Sony / Minotla A
  6. SIGMA DC 18-50 mm 1: 2.8 DN C [Contemporary], since Oct 2021, for Sony E, Leica L

With variable maximum aperture (DC and DC Contemporary series):

  1. Sigma dc 17-70mm 1:2.8-4.5, February 2006, for Sigma SA, Nikon F, Canon EFS, Pentax K, Sony / Minotla A
  2. Sigma dc 17-70mm 1:2.8-4.5 MACRO HSM, from July 2007, for Nikon DX cameras only (Nikon F mount)
  3. Sigma dc 17-70mm 1:2.8-4 MACRO HSM OS, from December 2009, for Sigma SA, Nikon F, Canon EFS, Pentax K, Sony / Minotla A
  4. Sigma dc 17-70mm 1:2.8-4 C, [MACRO, OS, HSM, Contemporary], from September 2012, for Sigma SA, Nikon F, Canon EFS, Pentax K, Sony / Minotla A
  5. Sigma dc 18-50mm 1:2.8-4.5 HSM OS ZOOM, from March 2009, for Sigma SA, Nikon F, Canon EFS, Pentax K, Sony / Minotla A

Nikon (DX, F mount)

  1. Nikon DX VR AF-S Nikkor 16-80mm 1:2.8-4E ED N, Nikon F mount, from July 2015
  2. Nikon DX AF-S Nikkor 17-55mm 1: 2.8G ED IF SWM, Nikon F mount, from July 2003

Pentax (DA, Q, K and Q mounts)

  1. Pentax SMC DA * 16-50 mm 1:2.8 ED AL (IF) SDM, Pentax KAF2 mount, since February 2007. Optical design is similar to the lens Tokina AT-X PRO SD 16-50 F2.8 DX Internal Focus (joint development of Tokina and Pentax)
  2. HD PENTAX-DA * 1: 2.8 16-50 mm ED PLMAW, from July 2021, Pentax KAF4 mount
  3. HD Pentax-DA 1: 2.8-4 20-40 mm ED Limited DC WR, Pentax KAF3 mount, black or silver body, from November 2013
  4. SMC Pentax 1: 2.8-4.5 5-15 mm ED AL [IF] [LENS 02], Pentax Q mount (crop factor Kf=5.53X or Kf=4.65X)

Canon (EFS, EF-S mount)

  1. Canon Zoom Lens EF-S 17-55mm 1: 2.8 IS USM (Image Sabilizer, Ulstrasonic, EFS), Canon EF-S mount, since May 2006

Sony (DT, A and E mounts)

  1. Sony DT 2.8/16-50 SSM, Sony A mount (Minolta A), since August 2011
  2. Sony E 2.8/16-55G (Sony SEL1655G), Sony E bayonet mount, from August 2019


  1. Fujinon Ashperical Lens Nano-GI XF 16-55mm 1: 2.8 R LM WR, Fujifilm X mount, since January 2015
  2. Fujinon Ashperical Lens Super EBC XF 18-55mm 1:2.8-4 RLM OIS, Fujifilm X mount, September 2012

Samsung (NX)

  1. Samsung lens 1: 2-2.8 S 16-50 mm ED OIS i-Function, Samsung NX mount, since January 2014

Olympus/Panasonic/Leica/Yongnuo (4/3, Micro 4/3, Kf=2X)

Mirrored 4/3:

  1. OLYMPUS ZUIKO Digital 11-22 mm 1:2.8-3.5, from February 2004
  2. OLYMPUS Digital 14-54 mm 1:2.8-3.5, from June 2003
  3. OLYMPUS Digital 14-54 mm 1:2.8-3.5 II, from November 2008
  4. OLYMPUS ZUIKO Digital 14-35 mm 1: 2 ED SWDsince January 2005
  5. Panasonic Lumix LEICA D VARIO-ELMARIT 1: 2.8-3.5 /14-50 ASPH. MEGA OIS, from July 2006

Mirrorless Micro 4/3:

  1. OLYMPUS M.ZUIKO DIGITAL 12-40 mm 1:2.8 PRO, since October 2013
  2. Panasonic Lumix Leica DG Vario-Summilux 10-25 mm f / 1.7 ASPH.since May 2019
  3. LUMIX G VARIO 1: 2.8 /12-35 ASPH. POWER OIS, since June 2012, in March 2017 an improved sub-version is released (outwardly they do not differ in any way)
  4. Panasonic Lumix Leica DG Vario-ELMARIT 1: 2.8-4.0 /12-60 ASPH., since March 2017
  5. Yongnuo 12-35 F2.8-4 STM ASPH, since April 2023

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D). The lens is shown in film slr camera Nikon EL2


Sigma 18-50 / 2.8 EX is an old fast full-time zoom with claims to a professional level of performance. May be the budget solution for Nikon's all-day crop lenses. Unfortunately, despite the fact that the Sigma 18-50 / 2.8 EX is a lens for the Nikon DX series, it lacks a built-in focus motor and will not fit the D3xxx, D5xxx, D40 / x series amateur cameras. D60 (for a detailed list, see the 'Focusing' section).


  1. low cost in the secondary market (especially compared to the original Nikon 17-55 / 2.8G)
  2. convenient set of focal lengths
  3. rear mount lens hood
  4. metal mount, rubberized focus and zoom rings. Soul Warming Marking 'EX'
  5. lock for fixing the lens in position 18 mm
  6. compact sizes (significantly smaller and lighter than the original Nikon 17-55 / 2.8G)
  7. special optical elements in the optical circuit (Sigma SLD, ASP)
  8. focus type internal
  9. constant maximum relative aperture of 1: 2.8 over the entire range of focal lengths
  10. good optical performance (good sharpness on closed apertures in the center of the frame, normal sharpness on open apertures in the center of the frame, other parameters are within the normal range for this kind of lens), lack of focus-shift during aperture


  1. the direction of rotation of the focus ring and zoom does not match the original similar lens Nikon 17-55 / 2.8G
  2. a slight backlash of the zoom ring, easily soiled velvet cover
  3. small stroke of the focus ring, insufficiently convenient manual focus
  4. not fast auto focus (but still quite comfortable)
  5. lack of dust and moisture protection (critical for a professional lens)
  6. absence inboard motor focusing (critical for users of amateur Nikon cameras without motor focusing)
  7. noisy auto focus
  8. rotation of the focus ring during auto focus. Lack of continuous manual focus control
  9. no depth of field scale and tags for working in the infrared spectrum. The focus distance scale is not made in the form of a window, but is simply applied to the focus ring and is very small
  10. rear lens movement while changing the focal length, small effect of a vacuum cleaner / air pump
  11. not even enough hole aperture on covered diaphragms
  12. lack of image stabilizer (appeared only in the model Sigma 17-50 / 2.8 OS, 2010)
  13. there may be incompatibility with some cameras and / or teleconverters (no exact data)
  14. lack of data about the lens in modern cameras, which makes it difficult to automatically correct some types of distortion (distortion, vignetting etc.), as well as the lack of a lens profile in most popular RAW converters
  15. palpable barrel-shaped distortion 18 mm focal length, tangible vignetting 18 mm focal length, low resolution at 18 mm in the corners of the frame on open apertures

Material prepared Arkady Shapoval. Training/Consultations | Youtube | Facebook | Instagram | Twitter | Telegram

Add a comment:



Comments: 33, on the topic: Overview of SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D)

  • Ishtar

    Errors in color. Some photos are covered with gray, the shadows are hard, in some places they are generally black. The brown hair color turns black and merges with the black crown of trees in the background. If you want beautiful photos from it - get ready to Photoshop.

    • Н

      Nikon's Skinton is still nasty, and also an ancient sigma - God forbid to see such a thing. Although the glass is razor sharp!

      • nikop

        Skinton is normal here, this is not d7000 and not a red canon

      • anonym

        Thanks for the advice. I also wanted to ask: is Nikon or Kenon better?

        • Valery A.

          Ask again from which end it is better to break an egg, from a sharp or a blunt one.

          • anonym

            And by the way, with what?

        • Arkady Shapoval

          With this question, it is a million times better to invest in photography courses.
          Or, restart your question with specific Nikon / Canon photo equipment models.

    • mariovel

      I used Sigma on Sigma with foveon - I have not seen anything better. It is such a lens and it is on the sigma.

      • Anton

        Not like Sigma 18-50mm f: 2.8-4 on foveon (

  • Molchanov Yuri

    Thanks so much for the review!
    As always, concise and accurate.
    I myself bought my daughter Sigma 17-50 2.8 a month ago, instead of Tamron 17-50 2.8. Which has little terrible sharpness at the edges, so also the stabilizer is buggy and rattles like a may bug. I already had such a Sigma, (it crashed unfortunately) and now they have fallen in price by half, so the recommendation came out doubly appropriate. I think that 18-50 for its price is just a great choice.

    • Molchanov Yuri

      Need to read: your recommendation (T9 ahead)

      • Arkady Shapoval

        The 18-50 HSM is a great choice, but this model is still a budget choice.
        17-50 OS is certainly best (if you do not take into account the original 17-55)

      • Serhiy Todoriuk

        On the contrary, I wanted to take it, the person said I was selling I was selling and I didn’t sell it, I took 18-70 and 50 1.4 as a banquet wagon in return, I didn’t regret a bit :) 18-70 has a minimum of HA, excellent sharpness in the corners over the entire range, fast motor, focus point does not go astray for an hour of zooming and costs three times cheaper :)

  • Vladimir

    Thanks to Arkady for the next, concise and honest review. I want to say right away that recently, for commercial purposes (baptism, birthdays, photo sessions, etc.) I used this particular lens (which was presented in the review) in conjunction with Nikon d7000. The lens coped with the tasks well, there were no special complaints about the glass. Personally, I like weighty lenses (such as the 17-50mm F / 2.8 VC tamron, and of course the super Nikon 17-55mm f / 2.8G, which I want to purchase).
    For this, I sell (exactly the one that was in the review) sigma for 4900 UAH, who are interested in calling 095 205 45 01, 068 557 61 90 Vladimir. Photo robots shot with this lens can look at

  • ViktorGL

    I have almost the same (non-motorized, only with the macro inscription), on d7000. At f2,8, the sharpness is like that of a whale 18-55, but already at f4 it is ideal (no worse than a fifty dollar). Focuses quite quickly (faster than the whale, a little slower than the 24-70 nano, but did not experience a lack of speed). The white balance is perfect. Very clean and clear picture. 50 mm are "not real", similar to 40mm, 50 1,8D increases more, respectively, and bokeshku 2,8 dauses a little stronger.
    Sometimes it may seem that there is back focus, but with 35 and 50 1,8g in poor light, this happened, such a feature of the d7000. Worse is the other: if the camera has a TTL flash (meike), even if it is in M ​​mode, the camera focuses about half the distance to the subject :(. It is treated by switching to af-c mode and assigning af to the ae-lock button -on. Autofocus highlighting doesn’t make a fuss anymore, but it doesn’t really bother.
    135mm is sometimes not enough)).
    When buying it, it had a defect - the zoom and focus ring were spinning at the same time, very tightly, touching each other, autofocus with autozoom turned out to be 8 /. I handled him a little, and everything became perfectly soft and smooth.

    • Arkady Shapoval

      You have a Macro version, it is optically slightly different, 1 ELD element was added there, and many other changes.

  • FED2


    • B. R. P.

      From the table at the beginning of the review: "SLD (Special Low Dispersion) - special low-dispersion elements in the optical scheme
      1 low dispersion element SLD ”

  • Alexander

    Arkady, please answer. D3200 with a Sigma Zoom DC 18-200mm 1: 3.5-6.3 HSM OS lens and with a SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D) lens. With a sigma lens, 18-50 frames are blurred. Based on your article, this glass will not fit such a 24 pixel Matrix. Or there is another parable. Example:

    • Arkady Shapoval

      Without a clue from where and what kind of crop (what part of the frame and what increase). I can not answer

      • Alexander

        Thank you

    • BB

      clear back focus

      • Alexander

        Thanks, I didn't know that. I will look for how to cure.

    • Serge

      I think the focus on the above example is on the wall of the cabinet, hence the soap.

      • Serge

        I will add. You focused manually, and confirmation of focus by a green dot is not always true (especially on younger cameras). Focus on LiveView.

    • Ssirman

      there is no autofocus, so you need to catch focus manually

  • Alexander

    Sigma Zoom DC 18-200mm 1: 3.5-6.3 HSM OS m 1 \ 4 f5 iso100

  • Alexander

    SIGMA ZOOM 18-50mm 1: 2.8 EX DC (D) m 1 \ 5 f5 iso100

    • Valery A.

      But in the photo from 18-50 sigma, the panel at the back is sharper, isn't it back-focus?

      • Alexander

        Yes, the panel is clearly in sharpness.

  • Sergei

    Can someone tell me from their experience ... If there is a Nnikkor 35mm 1.8G, is there any sense in this Sigme for universal tasks?

    • B. R. P.

      For universal tasks, of course, there is a sense in such or similar in focal and aperture lens. You will have both a fairly wide angle and a more portrait angle compared to 35mm. f. R. 50mm. and ample aperture of 2,8.

  • Dmitriy

    I bought here by chance for little money this lens in the version for Canon as a plug for 7d. And I was very surprised, the lens is incredibly sharp open, although it would seem that it was developed at a time when there were no matrices like 7d at 18MP, none of the manufacturers rose above 8. Focusing is also quite fast and quite quiet, although not HSM, I did not observe any misses except for moving objects. It is inconvenient, however, after the Canon USM, to manually focus, necessarily switching to MF, but this is a matter of habit. The drawing is nice too. A little afraid of oncoming light, but I never caught hares with a hood, no matter how hard I tried. The impression is spoiled only by the body paint, which is worn and shabby around, it was not for nothing that Sigma subsequently abandoned such a color. And so a good lens for travel. I will replace 17-40 L and fifty dollars.

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