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  1. #111
    DPP Member miggydonida's Avatar
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    Re: sigma 50-150 2.8



    Quote Originally Posted by Bambam Ilusorio View Post
    hi miggy, did I read you right? you do lens calibration, with Sigmas in particular? I'm planning on getting this lens kasi (or the Sigma 70-200mm Macro, but I'm still torn between the two. do you calibrate this rin?) since it was given a very nice review at Shutterbug>>

    http://www.shutterbug.net/equipmentr...ses/0607sigma/

    However, it seems to be a fact for Sigma lenses that you have to try several copies before you get full satisfaction from them (bakit kaya?walang ba silang QA?after all these years??). Sa tingin ko if it wasn't for the price advantage di na sana talaga bibili ang photogs ng brand nila. And to go through several copies is somewhat impractical for me since I'm from out of town. Any suggestions how to get a good copy at the store pa lang?

    Hi Bambam,

    I don't calibrate lenses... I can only help you check if the lens that you are planning to get has front focus or back focus problems.

    It is true that Sigma lenses has this issue.. I am not sure about the lack of a good QA.. I guess they don't.. Coz if they did, we wouldn't be talking about this here right? That's why I strongly urge you to test the lens thoroughly before you leave the store.. I posted in one my earlier replies how to test it using a measuring tape.

    With regards to the 50-150, I must say it is a very practical, decent, lightweight, fast (HSM), and best value for the buck lowlight telephoto lens. I used to have one and I am very happy with how it performed. Until I went for an all Nikon setup, this was my money lens for telephoto shots for lowlight shooting.

    So whichever way you plan to go, be it the 50-150 or 70-200 lenses of Sigma, just make sure you test the lens for the FF and BF issues. And if you do get a good copy, I'm sure you won't regret it.

    HTH

    Regards,
    Miggy
    Last edited by miggydonida; 11-06-2007 at 12:09 PM.
    "An artist uses his paint and canvas to create works of art,
    while a photographer uses shadows and light to create his
    own masterpiece." ~ miggy donida

    www.flickr.com/miggydonida
    http://miggyboy888.multiply.com/


  2. #112
    DPP Member michaelsalomon's Avatar
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    Re: sigma 50-150 2.8

    im thinking of actually getting this lens. then sell my 28-70 sigma.

    well thats just a thought.

  3. #113
    DPP Member miggydonida's Avatar
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    Re: sigma 50-150 2.8

    Quote Originally Posted by michaelsalomon View Post
    im thinking of actually getting this lens. then sell my 28-70 sigma.

    well thats just a thought.
    That's not such a bad idea, Mike.
    "An artist uses his paint and canvas to create works of art,
    while a photographer uses shadows and light to create his
    own masterpiece." ~ miggy donida

    www.flickr.com/miggydonida
    http://miggyboy888.multiply.com/


  4. #114
    DPP Member ErwinTay's Avatar
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    Re: sigma 50-150 2.8

    Quote Originally Posted by miggydonida View Post
    Hi.. Its pretty simple just position a measuring tape (the one's used by carpenters) that has a button that is retractrable at a 45 degree angle.. and aim for a certain number on the tape using different focal lengths of your lens.. and then shoot..

    so ex. if your aiming for lets say the "8"cm line, and once you focus and shoot and you look at the viewfinder and you see that the "7"cm line is clearer than the "8", then you have a front focus issue.. If you're aiming for "8" and the "9" line is clearer, then it has a back focus problem.

    HTH
    Clarify lang po, Miggy, How do I position the Tape measure? Flat on the table, standing or I bend it to have a 45degree angle? Thanks.

  5. #115
    DPP Member diegodanila's Avatar
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    Re: sigma 50-150 2.8

    May OS version ba ang lens na ito? I have shaky hands
    My DSLR is still essential but I have to admit, sometimes it's losing the battle with my LX3

    Equipment: Nikon D300S...with numerous cheap "generic" lenses...but I have photoshop!...hehehe

    You are a "technician" and not an "artist"...if you are always fuzzy about your equipment and not your "output"!

    C'mon lets face it...almost all photos posted in this forum were altered, sharpened or tweaked in some other way!

    www.diegodanila.multiply.com

  6. #116
    DPP Member diegojose's Avatar
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    Re: sigma 50-150 2.8

    nope no OS version. that'd be a nice upgrade/update to this lens

  7. #117
    DPP Member orlandoendaya's Avatar
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    Re: sigma 50-150 2.8

    Now that you've mention it. Any news/gossip on whether they're planning to release an OS version of this lens? If they do.. will be aiming for a flash gun first and wait for the OS version.

  8. #118
    DPP Member miggydonida's Avatar
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    Re: sigma 50-150 2.8

    Quote Originally Posted by ErwinTay View Post
    Clarify lang po, Miggy, How do I position the Tape measure? Flat on the table, standing or I bend it to have a 45degree angle? Thanks.
    make sure the tape measure is positioned this way.. extend it.. and make sure that it is positioned straight at a 45 degree angle.

    "An artist uses his paint and canvas to create works of art,
    while a photographer uses shadows and light to create his
    own masterpiece." ~ miggy donida

    www.flickr.com/miggydonida
    http://miggyboy888.multiply.com/


  9. #119
    DPP Member pio sugay's Avatar
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    Re: sigma 50-150 2.8

    OR, if you'll be doing this at home and you have all the time in the world, yuo can dowload a chart

    http://www.focustestchart.com/chart.html

  10. #120
    DPP Member ErwinTay's Avatar
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    Re: sigma 50-150 2.8



    Thanks Miggy! Mali pala ang mga ginawa ko. hehehe.

    @pio, thanks for the link.

 

 

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