20mm f1.7 vs 25mm f1.4 - focus speed on E-PL1?

Discussion in 'Native Lenses' started by ean10775, May 21, 2012.

  1. ean10775

    ean10775 Mu-43 All-Pro

    Jan 31, 2011
    Cleveland, Ohio
    I know there has been lots of discussion comparing these two lenses, but a lot of what I've read regarding their performance, especially focus speed, has been limited to their use on newer PEN bodies. Has anyone used these two lenses on an E-PL1? If so, how much of a difference in focus speed/accuracy is there between them?
  2. Accuracy seems fine with both, but the improvement in focusing speed of the 25 compared to the 20 is less dramatic on an E-PL1 compared to a Panasonic body or a newer Olympus. In reasonable light the lens operates with the aperture partially stopped down and the focusing process involves both opening and closing the aperture which on the E-PL1 is noisy and seems to slow the process down.
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