A&P Attn / HELP: TAMRON 17-50/2,8 Owners. Does your pics get soft @ F/2.8?

Discussion in 'Lifestyle' started by Smeghead, May 11, 2009.

  1. Smeghead

    Smeghead New Member

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    I was just playing around with my cam at home shooting @ 2.8 and 8.0 focused on the same subject and the shots @ 2.8 are pretty damn soft. I don't know if this is normal for this lens or if it's something wrong with mine.

    Cam: XSi
    Lens: TAMRON 17-50/2,8
    Tripod: Yes
    ISO 200
    Focal length: 50mm
    One focus point, just above one of the letter (I think above the "S").

    Here's a sample

    [​IMG]

    F 8 / 100% Crop
    [​IMG]

    F 4
    [​IMG]

    F 2.8 :ugh:
    [​IMG]


    Should it really be this soft?

    Please if you can, I would really appreciate if you could post shots for comparison.
     
    Last edited: May 11, 2009
  2. Jonny Chimpo

    Jonny Chimpo OT Supporter

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    All lenses get sharper when you stop down and are softer wide open. :hsugh:
     
  3. Smeghead

    Smeghead New Member

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    Yeah, but should it be THIS much? Isn't this extreme?
     
  4. Jonny Chimpo

    Jonny Chimpo OT Supporter

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    Looks about right to me.
     
  5. Smeghead

    Smeghead New Member

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    I hope you're right.

    Although Mojito said his Tamron 28-75 is perfectly sharp at 2.8.
     
  6. Jonny Chimpo

    Jonny Chimpo OT Supporter

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    You're not using a 28-75. Apples. Oranges.
     
  7. Smeghead

    Smeghead New Member

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    So that Tamron just happen to produce sharper pics @ F/ 2.8.

    You would think they would produce the same quality pics as it's the same manufactures and about the same price.
     
  8. Jonny Chimpo

    Jonny Chimpo OT Supporter

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    :ugh: @ horrible logic failure

    Different lens designs. Same thing happens with Canon, even among L lenses. Some are sharp wide open, others aren't. Famous case in point: 50mm f/1.0L cost more than all of your gear combined (probably 2-3x the amount, actually) but was soft as shit wide open.

    :picard:
     
  9. Smeghead

    Smeghead New Member

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    So is there any lens I can replace my Tamron with that produce sharp(or atleast sharper) pics wide open?
     
  10. asdfbunk

    asdfbunk A Member OT Supporter

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    i have some uploaded, how do you hotlink from flickr :o
     
  11. jaydub

    jaydub Every calling is great when greatly pursued.

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    same way you hotlink from anyplace
     
  12. asdfbunk

    asdfbunk A Member OT Supporter

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    nevermind, focus is on the red thing in the O, both straight from camera except for jpg conversion and crop. 100% crops

    f/2.8

    [​IMG]


    f/8

    [​IMG]
     
    Last edited: May 12, 2009
  13. asdfbunk

    asdfbunk A Member OT Supporter

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    i couldn't find the direct img url :o
     
  14. jaydub

    jaydub Every calling is great when greatly pursued.

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    flickr's also gay about sayin you need to have a link to flickr as well, but I never do it.
     
  15. Smeghead

    Smeghead New Member

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    Way sharper @ 2.8 than mine. Much less difference between F8 & F2.8.
    Man, something must be wrong with mine.

    Thanks for sharing.
     
  16. asdfbunk

    asdfbunk A Member OT Supporter

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    Try manual focusing in liveview, it might just be front/back focus. Either way you're probably gonna have to send it in.
     
  17. DRAIGON

    DRAIGON New Member

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    Comparing the lettering at the bottom, 2.8 is sharper than 8 imo
     
  18. tenplanescrashing

    tenplanescrashing Active Member

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    CHANGE YOUR LIGHTING CONDITIONS...THEY SUCK!

    There is your answer, redo it and see if it improves or not.
     
  19. tenplanescrashing

    tenplanescrashing Active Member

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    Here is my test:

    ISO: 400
    Nikon D200
    Focal Length: 29mm

    f/2.8
    [​IMG]

    f/5.6
    [​IMG]

    f/8
    [​IMG]

    f/20
    [​IMG]

    I'd say it looks less sharp due to the shallow DOF but it isn't anything to cry about. I also don't know how to specifically do 100% crops so I didn't. :(
     
  20. sony

    sony Active Member

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    same manufacturer, same price, same quality bro :bowdown:
     
  21. Jbrown

    Jbrown OT Supporter

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    :ugh: wtfbeer
     
  22. Jbrown

    Jbrown OT Supporter

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    [​IMG]
     
  23. GlobeGuy

    GlobeGuy New Member

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    Some focal lengths are easier to create better quality lenses than others.
     
  24. sony

    sony Active Member

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    fixed
     
  25. Jbrown

    Jbrown OT Supporter

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    :rofl:


    Didnt even notice he said that. I had to read what you "fixed" like 10 times atleast to understand what you meant


    Damn Nikon owners :mamoru:
     

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