Sigma EX 20-40mm f/2,8 DG


Sigma EX 20-40mm f/2,8 DG


Sigma EX 20-40mm f/2,8 DG
This is a zoom lens manufactured by Sigma and the model was launched 2001.
The lens belongs to the category  normal zoom lenses, a normal lens where you have the possibility to zoom in and out.
See all lenses released by Sigma
See all lenses that was released 2001
Read more about normal lenses
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Compability, auto focus and focal length
The lens is available for both Canon and Nikon cameras, but there are two different versions of this lens (one for each brand and mount) so it is important that you ask for and choose the right version when bying the lens.
This lens is constructed to fit all models of Canon and Nikon cameras, regardless of camera model or type of sensor.
Here it is the only Canon version of the lens that has a built-in auto focus (AF) motor. The possibility to use auto focus (AF) is available for Nikon cameras but only if the camera itself has a built-in auto focus (AF) motor. Some cheaper and budget camera models from Nikon lacks a built-in auto focus motor, and we at Lensora appreciate auto focus, so in the list of compatible cameras we have chosen to display only the cameras that you can get autofocus with.
The lens has a focal length of 20-40 mm. Depending on which camera the lens is used, the experienced and perceived focal length will be different. Please visit the list of compatible cameras below, it will provide the equivalent focal length you get on each camera.
See compatible cameras and perceived/equivalent focal length
Read more about focal length and your field of view
Read more on the cameras impact on the perceived focal length
Read more about the auto focus motor and the importance of this part
 
Lens brightness and image stabilizer
The lens brightness and aperture value is f/2,8.
This aperture value indicates that the lens is very bright.  This will make it so much easier shooting in darker environments where you do not want or can use flash lighting, for example in churches or at different sports venues.
A feature worth commenting, which is also related to lens brightness, is that the brightness and maximum aperture-value remains constant regardless of focal length used. This makes it easier for you as a photographer. No matter if you are have the focus ring and focal length at 20 mm or at 40 mm the aperture value can be f/2,8.
The lens lacks image stabilization, which otherwise os good for avoiding the blur that can occur when using slow shutter speeds. Since the lens is bright, with good aperture value, the lack of image stabilization might not be that big of a deal, although a image stabilizer is always an advantage to have.
Read more about the aperture and lens brightness
Read more about how an image stabilizer works
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Filter and Lens Hood
The lens has a traditional filter thread on the front and its measuring 82 mm which also the filter you will use must have. If you use for example an UV filter can be a cheap insurance against scratches and dust.
Together with the lens there is a lens hood included but we have unfortunately no further information on model etc so feel free to contact us if you know more.
Read more about filters
Read more about lens hoods
 
Pictures (product and sample images)
In order to see larger product images of the lens, click the link below.
Besides looking at product images it is also of interest to see pictures taken with this specific lens. This can give you a hint of what kind of images this lens can achieve, what the focal length will be like etc.
Images of Sigma EX 20-40mm f/2,8 DG
Sample pictures taken with Sigma EX 20-40mm f/2,8 DG
 
Things to consider before buying
Below you will find some summarized points and facts that can be considered as the 'pros and cons' of this lens. These are based entirely on the facts and values that are accessible through the lens specification, so we highly recommend that you also read the reported reviews available (see tab 'Reviews'); this in order to get a more complete view of the lens and its capabilites. Reviewer opinions reflect the lens, its use and its optical performance in a more accurate way, but any way - here a few different points to consider before buying this lens.
The price (more info)
The lens brightness, f/2,8
Constant maximum aperture value regardless of focal length
Works on all sensor types
A lens hood is included
No built-in auto focus motor (the Nikon version)
The lens is not sealed against moisture and dust
Heavy (595 gr)
Specification
Product Name:Sigma EX 20-40mm f/2,8 DG  (See dictionary)
Release date: 2001
Manufacturer:Sigma
Type of lens: Normal Zoom Lens
Construction: Zoom lens (with the ability to zoom in and out)
Works with cameras from: Canon (see compatible cameras)
Nikon (see compatible cameras)
1:1 at Macro:
No Macro lens
Compability:
Works on all sensors (see compatible cameras)
Auto focus:
Yes
Built-in auto focus (AF) motor:
Canon
Nikon
Nikon; for auto focus the camera has to have a built-in auto focus (AF) motor
See a list of compatible cameras
Maximum aperture: f/2,8
Focal Range: 20-40 mm
Depending on which camera this lens is used the focal length can seem different. This is because different camera sensors can have a slight crop factor and the focal length will be equivalent to:
  20-40 mmon Canon FF, Full frame
  26-52 mmon Canon APS-H
  32-64 mmon Canon APS-C
  20-40 mmon Nikon FX, Full frame
  30-60 mmon Nikon DX, APS-C
See list, camera for camera
Read more on the cameras impact on the perceived focal length
Lens Construction: 17 elements / 13 groups
Image Stabilizer:
No
Closest Focusing Distance:30 cm
Filter: Filter Thread, 82 mm
Lens Hood:
Included, but no info available
Tripod mount:
No (Read more)
Weather sealing:
No
Dimensions (diameter x length):89 x 107 mm
Vikt:595 g (see the total weight, camera+lens)
 
 
Product Page (Sigma): There are no product links available.
 
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Best deals on Sigma EX 20-40mm f/2,8 DG
Together with PriceSpy we here give you the best prices available for this lens. Click below for complete details.

Reviews
fotosidan.se (reviews by users)
 
ephotozine.com
http://www.ephotozine.com/article/Sigma-EX-Aspherical-DG-DF-20-40mm-f28
 
fredmiranda.com
http://www.fredmiranda.com/reviews/showproduct.php?product=96&sort=7&cat=37&page=2
 
slrlensreview.com
http://slrlensreview.com/web/sigma-slr-lenses-41/wide-angle-zoom-slr-lenses-72/141-sigma-20-40mm-f28-ex-dg-asph.html
 
 
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Does this lens work with my camera?
Below you will find all registered cameras here on Lensora. Wether the actual camera works with this lens or not is displayed with a green or a red symbol, and if you want to know more about why the lens and the camera work or do not work together you click for further information..

Canon EOS 1000D Compatible More information
Canon EOS 100D Compatible More information
Canon EOS 10D Compatible More information
Canon EOS 1100D Compatible More information
Canon EOS 1200D Compatible More information
Canon EOS 1300D Compatible More information
Canon EOS 1D Compatible More information
Canon EOS 1D Mark II Compatible More information
Canon EOS 1D Mark III Compatible More information
Canon EOS 1D Mark IIn Compatible More information
Canon EOS 1D Mark IV Compatible More information
Canon EOS 1D X Compatible More information
Canon EOS 1D X Mark II Compatible More information
Canon EOS 1Ds Compatible More information
Canon EOS 1Ds Mark II Compatible More information
Canon EOS 1Ds Mark III Compatible More information
Canon EOS 200D Compatible More information
Canon EOS 20D Compatible More information
Canon EOS 20Da Compatible More information
Canon EOS 300D Compatible More information
Canon EOS 30D Compatible More information
Canon EOS 350D Compatible More information
Canon EOS 400D Compatible More information
Canon EOS 40D Compatible More information
Canon EOS 450D Compatible More information
Canon EOS 500D Compatible More information
Canon EOS 50D Compatible More information
Canon EOS 550D Compatible More information
Canon EOS 5D Compatible More information
Canon EOS 5D Mark II Compatible More information
Canon EOS 5D Mark III Compatible More information
Canon EOS 5D Mark IV Compatible More information
Canon EOS 5DS Compatible More information
Canon EOS 5DS R Compatible More information
Canon EOS 600D Compatible More information
Canon EOS 60D Compatible More information
Canon EOS 60Da Compatible More information
Canon EOS 650D Compatible More information
Canon EOS 6D Compatible More information
Canon EOS 6D Mark II Compatible More information
Canon EOS 700D Compatible More information
Canon EOS 70D Compatible More information
Canon EOS 750D Compatible More information
Canon EOS 760D Compatible More information
Canon EOS 77D Compatible More information
Canon EOS 7D Compatible More information
Canon EOS 7D Mark II Compatible More information
Canon EOS 800D Compatible More information
Canon EOS 80D Compatible More information
Canon EOS D30 Compatible More information
Canon EOS D60 Compatible More information
Nikon D1 Compatible More information
Nikon D100 Compatible More information
Nikon D1H Compatible More information
Nikon D1X Compatible More information
Nikon D200 Compatible More information
Nikon D2H Compatible More information
Nikon D2Hs Compatible More information
Nikon D2X Compatible More information
Nikon D2Xs Compatible More information
Nikon D3 Compatible More information
Nikon D300 Compatible More information
Nikon D3000 Not compatible More information
Nikon D300s Compatible More information
Nikon D3100 Not compatible More information
Nikon D3200 Not compatible More information
Nikon D3300 Not compatible More information
Nikon D3400 Not compatible More information
Nikon D3s Compatible More information
Nikon D3x Compatible More information
Nikon D4 Compatible More information
Nikon D40 Not compatible More information
Nikon D40x Not compatible More information
Nikon D4s Compatible More information
Nikon D5 Compatible More information
Nikon D50 Compatible More information
Nikon D500 Compatible More information
Nikon D5000 Not compatible More information
Nikon D5100 Not compatible More information
Nikon D5200 Not compatible More information
Nikon D5300 Not compatible More information
Nikon D5500 Not compatible More information
Nikon D5600 Compatible More information
Nikon D60 Not compatible More information
Nikon D600 Compatible More information
Nikon D610 Compatible More information
Nikon D70 Compatible More information
Nikon D700 Compatible More information
Nikon D7000 Compatible More information
Nikon D70s Compatible More information
Nikon D7100 Compatible More information
Nikon D7200 Compatible More information
Nikon D750 Compatible More information
Nikon D7500 Compatible More information
Nikon D80 Compatible More information
Nikon D800 Compatible More information
Nikon D800e Compatible More information
Nikon D810 Compatible More information
Nikon D810A Compatible More information
Nikon D850 Compatible More information
Nikon D90 Compatible More information
Nikon Df Compatible More information
Pictures (product and sample images)
In order to see larger product images of the lens, click the link below.
Besides looking at product images it is also of interest to see pictures taken with this specific lens. This can give you a hint of what kind of images this lens can achieve, what the focal length will be like etc.
Images of Sigma EX 20-40mm f/2,8 DG
Sample pictures taken with Sigma EX 20-40mm f/2,8 DG
Alternatives to Sigma EX 20-40mm f/2,8 DG
For you with:
Canon
Canon EF 20-35mm f/3,5-4,5 USM
Canon EF 24-70mm f/2,8 L USM
Canon EF 16-35mm f/2,8 L USM II
Canon EF 17-40mm f/4 L USM
 
For you with:
Nikon
Nikon AF 18-35mm f/3,5-4,5 D IF ED
Nikon AF-S 16-35mm f/4 G ED VR
Nikon AF-S 17-35mm f/2,8 IF ED
Nikon AF-S 24-70mm f/2,8 G ED
 

 
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