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Thread: Sigma 17-50 f/2.8 EX OS HSM (Sony/Alpha)

  1. #1
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    Sigma 17-50 f/2.8 EX OS HSM (Sony/Alpha)

    For sale is a Sigma 17-50 f/2.8 EX OS HSM lens in the Sony Alpha mount, in pristine "like new" condition. The lens belongs to Sigma's premium "EX" range and the build/quality reflects that.

    The lens has "OS" (Optical Image Stabilization) and allows upto 4-stops of handholdability and when using it on a Sony/Alpha APS-C body, you would need to switch off the in-body stabilization. The lens also comes with Sigma's ring-AF-motor (HSM) but like with a couple of their products, does not allow DMF.

    The optical in-lens stabilization prevents cameras like the A55/33 from heating up quickly when shooting video (when using the in-body SSS with video, the sensor heats up in around 6 minutes), while allowing "stabilized" hand-held video and stills shooting.

    The lens was purchased a few months back, from B&H, and is in pristine - like new - condition. It also has the remaining manufacturer's warranty.

    The lens is fully compatible on the SLT A55 (which I also have) and costed $669 brand-new.

    The B&H link (from where I bought the lens) is as below:

    Click here for B&H link

    Sale Price: $475 (shipped/paypalled) - shipments to lower 48 US states

    Last edited by roweraay; 19th June 2011 at 18:34.
    A900 with a few lenses, flashes etc.

  2. #2
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    Re: Sigma 17-50 f/2.8 EX OS HSM (Sony/Alpha)

    Here is a Test done by Photozone.de on this lens:

    Click here for Photozone test done on a Canon 15MP APS-C

    And quoting their conclusion from the above link:


    Verdict

    The Sigma AF 17-50mm f/2.8 EX DC HSM OS is a highly competitive APS-C standard zoom lens and Sigma's best product in this class so far. It's not a flawless lens but none really is. Its biggest weakness is the performance at f/2.8 - the resolution in the image center is already exceedingly high here but the image corners are soft between 17-35mm and there's some vignetting at the extreme ends of the zoom range. However, starting at f/4 it beats or at least matches alternative products including the more expensive Canon EF-S 17-55m f/2.8 USM IS. The lens is extremely sharp across the frame here with no obvious flaw across the zoom range. The field curvature is also minimal (quite flat focus plane). Lateral CAs are not really field relevant. The distortion characteristic is about average for a lens in this class. The quality of the bokeh (out-of-focus blur) is slightly better compared to most competitors although you will naturally find prime lenses which perform better here.

    The build quality is very good in absolute terms but the rotating focus ring in AF mode and, consequently, the lack of FTM (full-time manual focusing) are a bit disappointing especially because Sigma avoided theses issues in some of their other zoom lenses like the AF 8-16mm f/4.5-5.6 DC HSM. The AF is both very fast and near silent. The tested sample had also no problem with focus accuracy. Sigma's OS ("Optical Stabilizer") is, of course, a welcome new feature with an efficiency which is easily as good as its Canon counterpart.


    A900 with a few lenses, flashes etc.

  3. #3
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    Re: Sigma 17-50 f/2.8 EX OS HSM (Sony/Alpha)

    Still available and product is in GREAT shape !
    A900 with a few lenses, flashes etc.

  4. #4
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    Re: Sigma 17-50 f/2.8 EX OS HSM (Sony/Alpha)

    The lens is SOLD ! And will be shipped out today.
    A900 with a few lenses, flashes etc.

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