Panasonic 12-35 frontfocus with Olympus OM-D

Discussion in 'Native Lenses' started by alf.igel, Jan 10, 2013.

  1. alf.igel

    alf.igel New to Mu-43

    Jan 3, 2013

    I have a problem with my Olympus OM-D and the Panasonic 12-35mm lens.
    When taking picture by using single target AF I notice a big frontfocus which gets worse in the long end, 25mm and 35mm. AT 25 and 35mm I am never able to get any charp pictures when shooting subjects at a longer distance; I validated the frontfocus by chart tests.
    It doesnt matter if I only use IS, or only OIS with longer or shorter shutter speed; Interestingly with smaller aperture the frontfocus gets worse.

    Its even strange that I tested 2 different Panasonic 12-35mm lenses at two different Olympus OM-D bodies, each setup of OM-D and Panasonic lens showed the big frontfocus.

    I checked out these setups where I encounter the frontfocus problem:
    1. OM-D body with firmware 1.5 & Panasonic lens 12-35mm with firmware 1.1
    2. OM-D body with firmware 1.2 & Panasonic lens 12-35mm with firmware 1.0
    Both setups show the same frontfocus problem.

    When mounting a Panasonic 20mm or a Panasonic 14-45mm to the OM-D bodies the pictures are fine and sharp - no problem at all.

    I am very curious as I have the same error with two lenses, so I would be interested if anybody else has similar problems with the OM-D and the Panasonic 12-35mm. As this lens is new I wouldnt like to have it repaired and I would like to know if there could be a common problem here.

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  2. noohoggin1

    noohoggin1 Instagram: @tomnguyenstudio

    May 21, 2012
    This is a curious issue to me because I thought I read (a few times) somewhere that with the contrast-detect autofocus of the mirrorless sensors, front- and back-focusing is a non-issue...? Still, I guess anything is possible.
  3. mauro

    mauro Mu-43 Regular

    Jun 26, 2012
    near Venice, Italy
    Your 12-35 copy have some problems but no front focus, it doesn't be possible with contrast detect af