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Sigma 18-50 mm f/2.8 EX DC Macro

Pictures:
Specifications:
Manufacturer Sigma
Model 18-50 mm f/2.8 EX DC Macro
Lens style Universal zoom
Focal length 18 - 50 mm
Maximum aperture f/2.8
Angle of view 69.3 - 27.9 o
Closest focusing distance 0.2 m
Maximum magnification 3
Minimum aperture 22
Number of diaphragm blades 7
Auto focus type AF
Lens Construction 15 elements / 13 groups
Filter diameter 72 mm
Macro Yes
Available mounts Nikon F
Sigma
Pentax K
Four Thirds
Canon EF-S
Dimensions 85.8 x 79 mm
Weight 450 g
Additional information Special Low Dispersion (SLD) Lenses and Extraordinary Low Dispersion (ELD) Lenses inside
Marketed September 2006
Average rating (7 owners reviews)
Build quality
Optical quality
Value for money

Overall

4.00 Good
Owners reviews (7)
  1. nik
    nik 1 February 2013, 12:19
    Build quality
    Optical quality
    Value for money

    Overall

    IP 194.239.x.x
    Owner since: 5 years
    Price:
    User profile: Amateur

    Cons: soft corners, yellowish colors

    Pros: contrast, great center sharpness, price

    Summary: good lens for price

  2. Digital Keen
    Digital Keen 31 January 2013, 22:54
    Build quality
    Optical quality
    Value for money

    Overall

    IP 24.219.x.x
    Owner since: 1 month
    Price: $400
    User profile: Amateur

    Cons: Incredibly soft in center at 2.8. No OS. No manual focus override. Hunts for focus in moderate/low light.

    Pros: Well built. Fast auto-focus.

    Summary: Shouldn't have purchased. Already sold it. The reviews were correct about center softness at 2.8. I shoot weddings and need tack sharpness in low light conditions. This lens is not for you if sharpness matters at all.

  3. Mr.Click
    Mr.Click 15 July 2011, 14:09
    Build quality
    Optical quality
    Value for money

    Overall

    IP 2.210.x.x
    Owner since: 3 months
    Price: 230€
    User profile: Semipro

    Cons: - Slow AF - No HSM on my Canon - weight

    Pros: - Well built - Nice bokeh - good resolution at f2,8 - fine colors - 1:3 Macro ability

    Summary: I like it more, than my Tamron 17-50 2,8 which i owned before. It`s a good value for the price Not good for action- photography , because of the slow AF.

  4. Chris
    Chris 5 August 2010, 09:45
    Build quality
    Optical quality
    Value for money

    Overall

    IP 86.155.x.x
    Owner since: 1 year
    Price: £320
    User profile: Semipro

    Cons: Slightly soft at times, miss having permanent manual override on the focus ring like the Nikkors have. Doesn't feel as solid as a Nikkor or as some other Sigma EX lenses. No rubber flange on the mount. Would prefer 17mm, or ideally 16mm, at wide end.

    Pros: Price. Mainly good enough performance for small size prints. Good colours. Practical weight and size. Excellent upgrade from kit zoom.

    Summary: A good value lens when compared to the offerings from Nikon and Canon. I haven't used the Tamron but I believe this is rated better than the Sigma by most and it has an extra mm at the wide end. If the price drops for the new 17-50mm f2.8 Sigma I will hopefully be buying that lens to replace my 18-50mm. At the moment though, the 18-50mm is great for the price.

  5. MR.FEESH
    MR.FEESH 17 February 2010, 06:40
    Build quality
    Optical quality
    Value for money

    Overall

    IP 147.9.x.x
    Owner since: 1 month
    Price: $449
    User profile: Amateur

    Cons: Sigma's definition of quality control is not the best, so you may need to have your lens calibrated to your specific body. Mine, for instance, came out of the package back-focusing slightly. Note- this doesn't effect manual focus.

    Pros: Great geometry, F2.8 throughout the whole zoom range, and a solid finish.

    Summary: I use this lens on my Sigma SD14. The combination of a lens and body both designed to detect great detail and produce sharp images sure is a winning combination.

  6. Alexis Hadjisoteriou
    Alexis Hadjisoteriou 11 February 2010, 15:44
    Build quality
    Optical quality
    Value for money

    Overall

    IP 213.7.x.x
    Owner since: 3 years
    Price: GBP 320
    User profile: Semipro

    Cons: Slightly front-focusing adjusted on the 50D

    Pros: Value for money and build quality

    Summary: Better than the Sigma 17-70 and Canon 17-85 so I'm happy for the money that I have spent.

  7. Daniel
    Daniel 23 January 2010, 05:48
    Build quality
    Optical quality
    Value for money

    Overall

    IP 190.231.x.x
    Owner since: 3 years
    Price: 400
    User profile: Semipro

    Cons: Construction Light

    Pros: Quality image

    Summary: Good