Should I exchange this lens? (40-150 PRO)

Discussion in 'Native Lenses' started by daanh, Mar 30, 2015.

  1. daanh

    daanh Mu-43 Regular

    Jul 25, 2010
    Last edited: Mar 30, 2015
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  2. DeeJayK

    DeeJayK Mu-43 Hall of Famer

    Feb 8, 2011
    Pacific Northwest, USA
    Real Name:
    If you're looking for better sharpness, you may need to invest in some finer-tipped brushes. :p
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  3. m43happy

    m43happy Mu-43 Veteran

    Feb 18, 2012
    There is some truth to this actually. It's hard to gauge sharpness when the subject itself isn't sharp to begin with. Try shooting still life like a flower or random items on your kitchen counter.
  4. daanh

    daanh Mu-43 Regular

    Jul 25, 2010
    Okay, it may not be the best subject there is, but when I look at it real close, there is a lot of detail actually. I can see really small dots from the printing process, that I don't see in these pictures.
  5. daanh

    daanh Mu-43 Regular

    Jul 25, 2010
  6. gryphon1911

    gryphon1911 Mu-43 All-Pro

    Mar 13, 2014
    Central Ohio, USA
    Real Name:
    my 40-150/2.8 is sharp at every focal length. I'm not one for shooting test targets, but this might be a case where a very carefully setup test on a tripod is in order. Shooting with different lenses sometimes requires different technique. You can eliminate that it is something you are doing versus a lens defect.
  7. pdk42

    pdk42 One of the "Eh?" team

    Jan 11, 2013
    Leamington Spa, UK
    I'd suggest you first get out and take some shots of real-world subjects before you go sending stuff back. Remember too that it's only macro lenses that are designed to give a flat focus plane (i.e for photographing paintings etc).
  8. Jfrader

    Jfrader Guest

    Unless you were on a tripod, those are pretty marginal shutter speeds for the focal length, especially the one with the t/c. For those focal lengths and that heavy lens, I'd want to be at a minimum of 1/500, more if possible.
  9. jnewell

    jnewell Mu-43 All-Pro

    Jun 23, 2011
    Boston, MA
    Echo the comment on the tripod - a good, study one that's not over-extended, with the self-timer to fire the shutter. If you're going to test critical sharpness, you have to eliminate the other potential causes of lack of sharpness.