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Leica 25mm f/1.4 on E-M5 vs 20mm f/1.7 for speed.

Discussion in 'Olympus Cameras' started by alvinksu, Dec 18, 2012.

  1. alvinksu

    alvinksu Mu-43 Regular

    59
    Nov 20, 2012
    New York
    Anyone have the 25mm f/1.4 and e-m5 combo? I have the 20mm, though it's a nice lens. I feel that the focusing is too slow. I'm wondering if the 25mm is a big improvement speed wise? I also have 45mm which I rarely use. I'm thinking of selling my 20mm and 45mm and just get the 25mm.
     
  2. duke

    duke Mu-43 Veteran

    420
    Dec 4, 2010
    Tulsa, moving to Houston
    Duke
    The PL25 is one great lens and the focus speed difference is one of the main differences between the 2 lenses IMO. I would suggest reading through some of the other threads here about the issue though, this question is very common.
    Here's one:
    https://www.mu-43.com/f38/pany-25mm-vs-pany-20mm-24399/
     
  3. dhazeghi

    dhazeghi Mu-43 Hall of Famer

    Aug 6, 2010
    San Jose, CA
    Dara
    The 25 is a significant improvement over the 20 in terms of AF. It's roughly equivalent to the 45.
     
  4. alvinksu

    alvinksu Mu-43 Regular

    59
    Nov 20, 2012
    New York
    thanks duke. i didn't realize that. =) so i guess, 25mm is much superior. I'll just get it. Thanks.
     
  5. demiro

    demiro Mu-43 Hall of Famer

    Nov 7, 2010
    Another vote of confidence for that move. As good as the 20 is, the 25 is definitely worth the upgrade.
     
  6. duke

    duke Mu-43 Veteran

    420
    Dec 4, 2010
    Tulsa, moving to Houston
    Duke
    No problem buddy :thumbup:
     
  7. erb3742

    erb3742 Mu-43 Regular

    56
    Oct 3, 2012
    Southern California
    Eric
    I sold my 20 for the 25 and am not looking back. The added size is well worth the speed and quality of the lens.
     
  8. alvinksu

    alvinksu Mu-43 Regular

    59
    Nov 20, 2012
    New York
    I have 2 boys. I'm always frustrated when trying to focus with 20mm. Then 45mm is just too close. I used to have the sigma 30mm f/1.4 on my canon and love the bokeh both in photos and videos. So i guess the 25mm is the equivalent.
     
  9. martinq

    martinq Mu-43 Rookie

    24
    Sep 2, 2011
    San Jose, CA
    Fourthed? Fifthed? The 20mm gives great results, but the AF is so much quicker and quieter on the 25mm that I think it's worth the extra expense.
     
  10. Jonathan F/2

    Jonathan F/2 Mu-43 Hall of Famer

    Aug 10, 2011
    Los Angeles, CA
    Honestly I wish they'd do a 20mm ver. 2 with the silent focus of the 14mm. Oh and slap in some nano-coating for a boost in contrast and to minimize CA!
     
    • Like Like x 1
  11. alvinksu

    alvinksu Mu-43 Regular

    59
    Nov 20, 2012
    New York
    Got the lens. wow, it's quite heavy even compare to m.zuiko 45mm f/1.8 but the focus speed is just lighting fast! Worth the extra cost.
     
  12. thomastaesu

    thomastaesu Mu-43 Regular

    169
    Nov 16, 2012
    ATL, GA
    Thomas
    <iframe width="560" height="315" src="https://www.youtube.com/embed/i34FBAFEBUk" frameborder="0" allowfullscreen></iframe>

    Focus comparison around 4:20 or so. PL25 is much faster.
     
  13. efoo

    efoo Mu-43 Regular

    91
    Jun 5, 2012
    Sydney, Australia
    Eddie
    Are you saying the focus speed of Pana 25mm f/1.4 is faster than Oly 45mm /f1.8?
     
  14. alvinksu

    alvinksu Mu-43 Regular

    59
    Nov 20, 2012
    New York
    I mean, the focus speed compare to Pana 20mm. Huge difference. I just wish the weight and size is like oly 45mm.
     
  15. datagov

    datagov Mu-43 All-Pro

    Dec 2, 2012
    New York
    Of course the lens doesn't really have any native focusing capability. The camera processor reads the light, judges the subject distance, and then sends "instructions" to the lens. The lens has small motors which expand or contract the elements to "focus." As the lens changes focal plane, the camera reevaluate the light and sends new instructions. A lens with a slow motor, like the 20mm 1.7, will have longer periods of out of focus areas which will cause the camera to "hunt" for focus. It would be nice if the cameras would be better calibrated for the focus motor speeds of each lens in varying light conditions. That would ease up on the processor confusion caused by slow motors and allow better focusing in low light with lenses like the aforementioned.