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Thread: Advice for getting lens

  1. #21
    Moderator daredevil123's Avatar
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    Default Re: Advice for getting lens

    Quote Originally Posted by Odyssey-Boy View Post
    Third party have many different abrievation though..

    Tokina has at-x... Sigma has HSM and OS for it's motor and IS... Tamron has USD for it motor and VC to replace IS

    so, the sigma 18-200 is meant for aps-c cameras.. So af-s is relatively the same..
    HSM = Sigma's Hypersonic Motor. But it is not Sigma's only lens motor. They also had another version of their lens motor that is NOT HSM (a slower and older motor).

    There is no AF-S for Sigma. AF-S is a Nikon strictly Nikon mount spec. It not just referring to Nikon's motor, but also the entire electronics spec for Nikon Lens. The wave motor in Nikon is referred to as SWM = Silent Wave Motor.

    Nikon AF-S and Sigma HSM are NOT relatively the same, especially here we are talking about Canon EOS mount. Want to say something, say it accurately. If cannot, might as well don't say anything.
    Last edited by daredevil123; 22nd October 2010 at 02:18 PM.

  2. #22
    Senior Member ovaltinemilo's Avatar
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    Default Re: Advice for getting lens

    Quote Originally Posted by daredevil123 View Post
    First time I saw a Sigma with AF-S.... and it is canon mount too.
    Sigma AFS sound abit counterfeit I must say...
    actually I like how Tamron uses USD. wonder if there's any SGD from any maker in near future...
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  3. #23

    Default Re: Advice for getting lens

    if you have low budget, get the 55-250mm IS.. its relatively cheap and got IS on it,..
    hope this helps !
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  4. #24
    Moderator daredevil123's Avatar
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    Default Re: Advice for getting lens

    Quote Originally Posted by ovaltinemilo View Post
    Sigma AFS sound abit counterfeit I must say...
    actually I like how Tamron uses USD. wonder if there's any SGD from any maker in near future...
    Next time got lens use AUD, HKG and RMB.

  5. #25
    Senior Member giantcanopy's Avatar
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    Default Re: Advice for getting lens

    Quote Originally Posted by Odyssey-Boy View Post
    so, the sigma 18-200 is meant for aps-c cameras.. So af-s is relatively the same..
    Sigma's equivalent is called HSM ( Hypersonic motor ). AFS is Nikon terminology

    Ryan

  6. #26
    Senior Member engrmariano's Avatar
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    Default Re: Advice for getting lens

    Quote Originally Posted by LeeJR View Post
    Hi

    I just bought a 550D with 18-55 lens found that the zoom is not enough for me. Intent to get a budget new lens with better zoom range. wondering what lens will be the best?
    common newbie issue...

  7. #27

    Default Re: Advice for getting lens

    For your reference,
    http://www.photozone.de/canon-eos/194-canon-ef-s-55-250mm-f4-56-is-test-report--review?start=2

    photozone is a convenient website. Of course, the best method is still google for all reviews
    Canon 550D - EF-S 18-135mm f3.5-5.6 IS / EF 50mm f1.8 II
    Sigma 70-300mm F/4-5.6 APO DG Macro

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