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Thread: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

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    Moderator ortega's Avatar
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    Default Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    for those who want to know, I did some tests shots and post them here
    make your own conclusions about the quality

    All images taken using a Nikon D80, ISO 100, Aperture priority



    Resized full frame @ f8 and f2.8 (tripod mounted)
    note the vignetting on the f2.8 image

    now at 50mm uncropped images



    next some 100% crop images
    Last edited by ortega; 29th August 2007 at 12:22 AM.

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    Moderator ortega's Avatar
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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    100% Crop Center from the 17mm shot


    Last edited by ortega; 29th August 2007 at 10:17 AM.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    100% Crop top right hand Corner from the 17mm shot



    note vignetting and softness of f2.8 image
    Last edited by ortega; 29th August 2007 at 10:19 AM.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Next, CA tests at different aperture settings

    All images taken with the same exposure using manual mode


    Full frame image

    100% crops of top right hand corner to show CA





    note that the CA becomes better as you stop down the lens
    Last edited by ortega; 29th August 2007 at 10:20 AM.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Magnification - manual focus set to minimum
    for greatest magnification at maxumum focal lenght

    image resized to 700px wide

    Bokeh

    set to get minimum dof and maximum oof of background
    image resized to 700px wide
    Last edited by ortega; 2nd September 2007 at 01:51 PM.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    I have also at the same time done the same test for the

    Sigma 18-50mm F2.8 EX DC (not the new macro version)

    and the

    Nikon AF-S DX 18-70mm f/3.5-4.5G
    Last edited by ortega; 31st August 2007 at 01:49 AM.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    cool! show the other tests please!

  8. #8

    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    I wonder if the Nikon 17-55mm F2.8 has the same vignette issue ... but then again, the price for the Tamron, as well as the weight really makes it an attractive buy.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Quote Originally Posted by nikkie View Post
    cool! show the other tests please!
    akan datang, maybe tomorrow
    me need to sleep now

    I also have not done the magnification and bokeh test yet
    Last edited by ortega; 29th August 2007 at 10:21 AM.

  10. #10

    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    anyway thanks ortega for the hard work

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    Senior Member StrifeYun's Avatar
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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    wow, thanks.

    how about the ef-s 17-55 ? hee
    Canon EOS "Luxury"
    [flickr]

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    glad to be of help
    Just hope you find it useful and informative

    in regards to the Canon ef-s 17-55, i am sorry but I am a nikon user, so no way for me to test.

  13. #13

    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Hi ortega, thank you for the review

    Btw, what's your thought on the the lens' AF performance and accuracy?

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Quote Originally Posted by harmony View Post
    Hi ortega, thank you for the review

    Btw, what's your thought on the the lens' AF performance and accuracy?
    this lens is the screw drive and is dependant on the camera body for speed
    so i really can't judge as it can be fast on my camera and slower on yours.
    also the target point must have some contrast for it to lock on.

    but IMO it is fast enough,

    as for accuracy, if you know where to aim and there is enough light for the AF sensor of the camera body to detect, then it is accurate.

    normally i use my eyes to check focus before i fully depress the shutter, so for me it is accurate. it is just a habit that i picked up during the film days.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    THANKS for posting this

  16. #16

    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Quote Originally Posted by ortega View Post
    this lens is the screw drive and is dependant on the camera body for speed
    so i really can't judge as it can be fast on my camera and slower on yours.
    also the target point must have some contrast for it to lock on.

    but IMO it is fast enough,

    as for accuracy, if you know where to aim and there is enough light for the AF sensor of the camera body to detect, then it is accurate.

    normally i use my eyes to check focus before i fully depress the shutter, so for me it is accurate. it is just a habit that i picked up during the film days.
    Bro, great work here. thinking of upgrading my D70s kit lens as well to something f2.8. the 18-70 is good for me but the lust for a 2.8 is neverending. Thanks alot for taking time to do this.

    Regards,
    tltan

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    ok, tonight (maybe) i will post the shots for thhe Nikon AF-S DX 18-70mm f/3.5-4.5G
    after that i will post a side by side shootout

    then you can decide if which lens is the one for you.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Great test ortega, my opinion both lenses have their pro and cons.
    by comparing pictures taken by both lens, I still prefer sharpness & details
    which the nikon delivers best.
    I bet my last dollar the 17-55mm Nikon lens is more than something compared
    to tamron, apart from the price.

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    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Quote Originally Posted by ortega View Post
    ok, tonight (maybe) i will post the shots for thhe Nikon AF-S DX 18-70mm f/3.5-4.5G
    after that i will post a side by side shootout

    then you can decide if which lens is the one for you.

    Great work bro..I'm waiting for the comparison of Nikon 18-70mm vs Tamron 17-50mm. I'm now using 18-70mm but wasn't satisfied with the sharpness so thinking of getting Tamron 17-50mm which Nikon 17-55mm is way above my budget.

  20. #20

    Default Re: Review - Tamron SP AF17-50mm F/2.8 XR Di II LD Aspherical [IF]

    Hi glay78,

    From my experience, the best Aperture setting for 18-70 is f5.6 and f8. I always use f5.6 and managed to get the sharpest image from my D50 + 18-70.

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