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Sigma 18-50mm f/2.8 EX DC 35mm Zoom

4.3 star rating
                      4.3 / 5 (20 Reviews)
MSRP : $500.00


  • Camera Format35 mm SLR
    Lens TypeZoom Lens
    Focal Length18mm - 50mm
    Lens Max Aperturef/2.8
    Min Aperturef/22
    Focus TypeAutofocus
    Closest Focusing Distance11 in
    Diaphragm Blades7 Blades
    Picture Angle27.9 - 69.3 degrees
    Attachment / Filter Size67 mm
    Groups / Elements15 Elements in 13 Groups
    Designed for Digital CameraYes
    Diameter2.9 in
    Length3.3 in
    Weight15.6 oz
    MPN580-306
    UPC085126580445
    Product ID22552096

Product Description

EX series, compact and lightweight large aperture zoom lens designed specifically for use with digital SLR cameras. Ideal large aperture standard zoom lens for digital SLR cameras with an APS-C size sensor.
  • Aperture range: f/2.8-22
  • Min. focus: 28cm (11in.).


  • Review Options:  Sorted by Latest Review | Sort by Best Rating

    Reviews 1 - 5 (20 Reviews Total) | Next 15

    User Reviews

    Overall Rating:4
    Value Rating:3
    Submitted by CJY a Expert

    Date Reviewed: July 17, 2009

    Strengths:    Constant f/2.8, relatively quiet focusing for not having HSM, sturdy and solidly built, good overall sharpness,

    Weaknesses:    Sample variation can be a real annoyance, some distortion at the wide end

    Bottom Line:   
    The lens was sent in for warranty service twice for focusing problems, primarily back focus. The second trip fixed the problems and I'm happy to have a lens I can count on again. I'm not sure if I will purchase third party lenses again as the quality control just doesn't seem up to par. The time and energy spent troubleshooting the problems and sending it in for service just isn't worth the cost savings in the long run.

    Expand full review >>

    Duration Product Used:   21+ years

    Price Paid:    $400.00

    Purchased At:   B&H Photo Video

    Type of photography:   People


    Overall Rating:5
    Value Rating:5
    Submitted by amandaW65 a Intermediate

    Date Reviewed: February 27, 2009

    Strengths:    This is an super sharp, low-light lens great for indoor photography. i photograph sculpture and fine art pieces in museums and I found this to be an excellent choice. also great for weddings, etc, where flash is not allowed but max aperture is needed. i find the usual amount of softness right at 2.8 but stopped down a little, the lens is at max sharpness. beautifully built.

    Weaknesses:    pricey. AF hunts a little in low light.

    Bottom Line:   
    a sharp wide angle lens with 2.8 capability

    Expand full review >>

    Duration Product Used:   11-20 years

    Price Paid:    $340.00

    Purchased At:   private seller

    Type of photography:   People


    Overall Rating:5
    Value Rating:5
    Submitted by misterg a Intermediate

    Date Reviewed: October 30, 2008

    Strengths:    sharp
    well made
    quick focus


    Weaknesses:    slightly soft at f2.8


    Bottom Line:   
    Have used this lens for a few weeks now and am very impressed. It is tack sharp at all but the widest aperture (still good at f2.8) and focuses quickly and accurately. Very well made and an absolute bargain. 95% performance of pro glass at less than one third of the price!! If you have a full frame dslr then maybe something better would be apropriate but for those of us using aps sized sensors , it ticks all the boxes...get one!

    Expand full review >>

    Duration Product Used:   21+ years

    Similar Products Used:   sigma 18-70
    nikon 18-70


    Type of photography:   People


    Overall Rating:2
    Value Rating:2
    Submitted by Claudiu a Intermediate

    Date Reviewed: October 2, 2008

    Strengths:    - F2.8, but if you aren't lucky enough to get a good one, it will be soft at 2.8
    - good focal range
    - relatively small and easy for- macro, even if it isn't true macro (1:1). It's just 1:3 magnification.
    - polarizing filter can be used since focusing doesn't rotate the front element
    - the build is pretty good, it feels solid; the zoom ring feel comfortable in using too; the finish gives it a classier look
    - even with all the problems I mentioned, at smaller apertures it produced good images; for as long as the subject was in DOF it worked pretty well


    Weaknesses:    - Sigma has bad QC, especially with this model it seems (heard other users complaining about it)
    - bad front-focus
    - top-right corner very soft
    - AF behaves erratically especially in low light, but it might be because the above problems
    - AF isn't HSM, thus it's a bit noisier and slower
    - Focus ring moves while using AF
    - Focus ring has a very small rotation angle, making it impossible to use Manuel focus
    - if you want manual focus, you need to switch to it


    Bottom Line:   
    I bought this lens because I've seen many good reviews and very good pictures taken with it. I also saw some bad reviews, but I thought I can't be that unlucky to get a bad copy.
    Well, I was that unlucky. It had bad front-focus, it was extremely soft on the top-right corner too and even from day one I noticed some dust particles inside it.
    Fortunately the shop that sold it to me (online shop) is replacing it with a Canon 17-40 L F4 and I am paying the difference. I'm not willing to go over several lenses just to find a good copy, so I'm betting on Canon L glass this time.

    All in all, this isn't a lens you want to order online. Be sure you test it before paying for it, or check the return policy of the shop.

    Expand full review >>

    Duration Product Used:   0-1 years

    Price Paid:    $480.00

    Purchased At:   online

    Similar Products Used:   Canon 18-55mm F3.5-5.6 (Canon 400D kit lens)

    Type of photography:   Outdoor


    Overall Rating:5
    Value Rating:5
    Submitted by gilliamhome a Professional

    Date Reviewed: December 29, 2007

    Strengths:    Good auto focus and manual focus relationships to the Evolt camera. 2.8 provides a speedy lens that is less prone to noise or slow shutter speed issues in low light situations. Built like a rock! Sturdy and dependable. A tribute to Sigma's keeping up with the 4/3 format camera needs.

    Weaknesses:    some potential for vignetting with 18mm setting and lens hood. Careful composition can prevent this.

    Bottom Line:   
    Excellent - fast, perfect zoom range, and quality of image with this zoom lens speaks volumes. Reasonably priced. 18mm-50mm range is a perfect "Default" lens for quick shooting. A super alternative to more pricey Zuiko lenses.

    Expand full review >>

    Duration Product Used:   21+ years

    Price Paid:    $400.00

    Purchased At:   Adorama

    Type of photography:   Other



    Reviews 1 - 5 (20 Reviews Total) | Next 15

    Review Options:  Sorted by Latest Review | Sort by Best Rating

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