decrease in sharpness?

Discussion in 'Beyond the Basics' started by tron, Jul 9, 2009.

  1. tron

    tron TPF Noob!

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    so ive been using an 18-55 on a d40 for about a year now (wish i just went straight to a d300 but whatever)

    anyways ive noticed that a lot of my pictures are turning out blurry even with the use of a tripod. ill post a few examples below. ive tried my friends 18-55 and his was soft too. maybe im going insane but it just doesnt make sense.

    examples:

    before: WITHOUT ANY SHARPENING
    [​IMG]

    after: WITH TONS OF UNSHARP MASK
    [​IMG]
     
    Last edited: Jul 14, 2009
  2. Mitch1640

    Mitch1640 TPF Noob!

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    personally, i dont see anything wrong with the first picture. maybe you should try stopping down the lens to around f/8.
     
  3. tron

    tron TPF Noob!

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    the first picture is an example of the sharpness i used to get in the first few months of use and the second picture is an example of of what ive been getting over the last few weeks

    :(
     
  4. yogibear

    yogibear TPF Noob!

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    Perhaps you can post up an image that is untouched with PP so we can see the problem you are talking about more clearly. The second shot's PP takes away our ability to see the difference with quality.
     
    Last edited: Jul 9, 2009
  5. AlexColeman

    AlexColeman TPF Noob!

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    These are very different pictures. The first looks fine, the second may be unsharp due to AF issues, or narrow depth of field @ macro distances. Try doing another car shot, and remember, the D40, and 18-55 will not give you the quality of pro glass and bodies.
     
  6. KmH

    KmH Helping photographers learn to fish Supporting Member

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    I don't see any problems in the first image either.

    The second image is basically useless for the discussion.

    You also don't speak to the apertures you are getting the 'blurry' images at. Diffraction at small apertures can kill sharpness.
     
  7. JerryPH

    JerryPH No longer a newbie, moving up!

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    One thing that absolutely blew me away was how sharp the pics got after I removed what I thought was a good filter. The differences was incredible. Did you install any filters on your lenses?

    Next, you are comparing apples to oranges. A close flower shot to a distant car shot... not even in the sam ballpark. That said...

    Technique, technique, technique! If you are shooting under 1/125th and in low light, use a tripod or lean or use proper technique that reduces motion blur. I am willing to bet the issue is more user caused than camera caused.
     
  8. UUilliam

    UUilliam TPF Noob!

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    its your aperture setting... i think..
     
  9. Josh66

    Josh66 Been spending a lot of time on here!

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    That's the strangest before & after series I've ever seen... You turned a Mercedes into a flower!:lmao:
     
  10. JerryPH

    JerryPH No longer a newbie, moving up!

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    You know... you're right! I didn't even notice!!! :lol::lol::lol:
     
  11. Josh66

    Josh66 Been spending a lot of time on here!

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    We should start figuring out how to reverse engineer this... How can we turn a flower into a Mercedes...?






    And BTW, they both look sharp enough to me. It's hard to really say for sure with just a web-sized picture though.
     
  12. Moglex

    Moglex TPF Noob!

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    That's what happens when your shots aren't sharp.
     

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