12-50 and 40-150 focus speeds ...

Discussion in 'Native Lenses' started by jeffryscott, Jun 13, 2012.

  1. jeffryscott

    jeffryscott Mu-43 Top Veteran

    505
    Jul 2, 2010
    Arizona
    Just got the 12-50 and am impressed with the focus speed on the OM-D. I've read a few comments that the 40-150 is similar in focus speed.

    What say you?
     
  2. bongestrella

    bongestrella Mu-43 Veteran

    404
    Sep 2, 2011
    Mechanicsburg, PA
    Based on my experience, the 40-150 is a little bit slower to focus around 130mm onwards. Nothing too serious though. Noticeable but certainly not a cause for concern.
     
  3. RevBob

    RevBob Super Moderator

    Jun 4, 2011
    NorthWestern PA
    Bob
    Mine is on an E-P3 but I'd say the same.:smile:
     
  4. efoo

    efoo Mu-43 Regular

    91
    Jun 5, 2012
    Sydney, Australia
    Eddie
    So you are noticing both the 12-50 and 40-150 lenses AF at the same speed on your E-P3?
     
  5. RevBob

    RevBob Super Moderator

    Jun 4, 2011
    NorthWestern PA
    Bob
    Sorry, I wasn't clear: I agreed that the 40-150 focusses quite quickly on the E-P3 but slows a bit past 130mm. I'm still waiting to try the 12-50. I can't imagine the 40-150 would be slower to focus on the OM-D, if anything, I would expect it to be a bit faster. I suppose the 12-50 could be faster to focus but I'm not sure it would be noticeable. (At some point fast is just fast unless you use a stopwatch). :biggrin:
     
  6. silversx80

    silversx80 Mu-43 Veteran

    229
    Apr 27, 2012
    North Carolina
    The m.40-150 focuses just ever-so-slightly slower than the 12-50. It's nearly unnoticeable. In fact, if feels like it focuses faster at 40-50mm, than the 12-50 does at 40-50mm.

    Honestly, the difference is so subtle that I could only imagine measuring it in a lab.
     
  7. bongestrella

    bongestrella Mu-43 Veteran

    404
    Sep 2, 2011
    Mechanicsburg, PA
    Agreed. It's come to a point where fast, very fast, and extremely fast are one and the same.