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30mm F2.8 Sigma lens
  • Vitaliy_KiselevVitaliy_Kiselev

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    The Sigma 30mm is fairly sharp but not stellar across the frame from F2.8 thru F8. Starting with F11, the effects of diffraction start to blur the images. I have not tested vignetting but I don't see it in my test shots and it is unlikely to be an issue because the lens was made for a larger image circle. The main problem that these test shots reveal is chromatic aberration, which can reduce the positive impression of a fairly sharp lens considerably. Interestingly, chromatic aberration is not corrected even on a Panasonic body.

    Read review at: http://www.superflexible.com/photography/sigma30mm.htm

    Sigma30mmSize.jpg
    800 x 355 - 202K
    Sigma30mmOnG3.jpg
    800 x 664 - 346K
  • 2 Replies sorted by
  • LPowellLPowell

    Gee, it sounds like a downgrade from the Sigma 30mm f1.4 legacy Four Thirds lens. It is smaller and cheaper though.

  • fatpigfatpig

    Well, since i don't need autofocus, there is no advantage vs good old manual lens from ebay :)

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