E-M1: Is it the body or Oly75 hunts more than 12-40?

Discussion in 'Native Lenses' started by nagual, Jan 24, 2014.

  1. nagual

    nagual Mu-43 Regular

    Aug 25, 2012
    Sorry if the title is misleading somehow, but what I found 75mm lens AF is not that snappy as 12-40 set on 40mm.
    I was kind of surprised that I could not lock focus sometimes on my E-M1 with this lens. True it was late at night with couple of bulbs lighting the room and TV was on. I tried my 12-40 in the same condition and it was much more responsive in that regard. Is it normal? My understanding that 75mm with f1.8 would be much better than f2.8 in situation like this.

    So who should I blame? Me, Oly75 or E-M1?
  2. metalmania

    metalmania Mu-43 Veteran

    Jul 19, 2012
    Not the lens or the body. :) If your intended target has less contrast, Oly 75 might hunt, however, the 12-40 seemed to focus "faster" is just because it focused on something else. If you move the 12-40 closer to the same target, try it again.