focus hesitation on brand new 12-40 pro

Discussion in 'Native Lenses' started by gilo9652, Apr 10, 2015.

  1. gilo9652

    gilo9652 Mu-43 Regular

    Apr 10, 2015
    hi guys,

    i just bought brand new em5ii and 12-40 pro(and also 40-150 pro). i already had pan 12-35 and i was planing to sell it as i changed all my gear to olympus.
    as i AF with the 12-40 i experience hesitations when the light is not very bright but not too dark on surfaces where contrast is a bit challenging but really not too much. When i compare to the 12-35 it performs better, seg better. Sometimes the 12-40 wouldn't focus at all. I am so disappointed. I really didn't expect that.
    Also, on the em5ii there is a tiny mark on the sensor.

    It's crazy. I bought all of it from B&H. The thing is that i am from Israel and now really don't know what to do... My family brought it to Israel for me, thats why i never had the chance to check it while being in NY.

    Please, what do you think i should do? I really didn't expect 12-40 to be inferior in AF than 12-35. Did anyone experience it? And this tiny mark on the sensor. Big mess...

    Feeling really upset and worried.

    Any suggestion and support from you will help.

  2. dornblaser

    dornblaser Mu-43 Hall of Famer Subscribing Member

    Aug 13, 2012
    David Dornblaser
    I previously owned the 12-35 and I have the 12-40 and EM-5 mk ii currently. I like the AF with the 12-40 and mk ii. I would call B&H tomorrow, it is the mark on the sensor that concerns me the most, that may be causing your AF problems.
  3. gilo9652

    gilo9652 Mu-43 Regular

    Apr 10, 2015
    maybe. But when trying the AF on the 12-35 it functions normally(and I'm experienced with this lens since i had it on first em5 for several years, and it performs equally).

    Its crazy that the 12-40 just hesitates and sometimes not focusing in situations where it should.. In this case it could be a defect lens?
    its also more noisy than the 12-35, but I'm ok with that, not a big deal. AF like that i wouldn't accept..

    Should i try sensor cleaning the body?

    Really unpleasent way to start with a super expensive new gear...
  4. dornblaser

    dornblaser Mu-43 Hall of Famer Subscribing Member

    Aug 13, 2012
    David Dornblaser
    I assume same lighting conditions as when you use the 12-35? Just curious, what happens when you use the touchscreen to focus?

    I would still call B&H tomorrow.
  5. davdenic

    davdenic Mu-43 Veteran

    Oct 14, 2014
    David D.
    Hi first of all check if the AF is central point or auto, normal or small. I think you know that but maybe could help.
  6. Ricoh

    Ricoh Mu-43 Top Veteran

    Nov 2, 2013
    I've just got myself one of the 12-40's and I'm finding AF unreliable on my GX7, it's hesitant and often mis-focuses. I'm using 1-Area focus point by the way.
    Switching the lens to my EM5 MkI it seems more compitent. Most strange.
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