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E-PL1: Shutter speed versus write speed

Discussion in 'Olympus Cameras' started by Promit, Jul 4, 2011.

  1. Promit

    Promit Mu-43 All-Pro

    Jun 6, 2011
    Baltimore, MD
    Promit Roy
    Okay, so there's something that is really bugging me about this camera. Don't know if it's a property of the camera, m4/3, digital, or what. If I take very long exposures, why does it take proportionally long to write the exposure to card? Take fireworks tonight, for example. I'm using very long exposures, but I don't appreciate having a ten second blackout after a ten second exposure.

    I mean, is this a problem with the body I've picked or is it a more general issue with digital?
     
  2. DiskMan101

    DiskMan101 Mu-43 Regular

    30
    Apr 30, 2011
    Kansas City
    I think it has to do with noise reduction. If you turn it off it should speed things up but your pics may be a little noisier. From what I've seen of my EPL1, I try not to take the ISO below 800 if I can help it.
     
  3. Promit

    Promit Mu-43 All-Pro

    Jun 6, 2011
    Baltimore, MD
    Promit Roy
    I'll try it, though I was running at 125 and 200 tonight.
     
  4. mauve

    mauve Mu-43 Top Veteran

    892
    Mar 9, 2010
    Paris, France
    The e-pl1 does dark frame subtraction in order to reduce noise on long exposures when NR is set to ON in the dedicated menu. (taken from a review I found on the net)

    So in effect the camera takes 2 pictures of equal duration, one with the shutter opened and another with the shutter closed.

    Cheers,
     
    • Like Like x 2
  5. Orientator

    Orientator Mu-43 Regular

    48
    Dec 7, 2010
    Yes, its the noise reduction. You can either switch it off in the settings or, if you need the extra speed quickly, switch to serial exposure. The NR is only active with long shutter timing and single shot mode.

    Stefan
     
  6. MajorMagee

    MajorMagee Mu-43 All-Pro

    Feb 24, 2011
    Dayton, OH
    You can turn noise reduction off manually for most shooting through the G menu command, but if you're in the Fireworks Scene mode it turns it back on automatically.
     
  7. SCT

    SCT Mu-43 Regular

    141
    Mar 8, 2011
    Landover, MD, USA
    I had my EPL1 set at ISO 100 to 200 and set up to take 2.5" to 3.5" exposures. The write speed took about the same amount of time as the exposure or a bit less. But the pictures are quite good, though.

    Then at one point, I did a 50" exposure. Damn does it take a long time to write.

    [​IMG]
    EPL1 + 14-42mm
    ISO 100, 3.5" Exp, f/4.5