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1/2f stop difference

Discussion in 'Native Lenses' started by dannat, Dec 20, 2011.

  1. dannat

    dannat Mu-43 Regular

    May 2, 2010
    Melbourne Australia
    With night sky portraits, will there be a noticeable or subtle difference between 2 lenses with half a stop distance, ie f1.6 cf f2
  2. FastCorner

    FastCorner Mu-43 Veteran

    May 28, 2011
    If you're taking photos of the night sky, I'd assume you're using a tripod and stopping down for sharpness. The wider aperture won't make a difference in that case.
  3. meyerweb

    meyerweb Mu-43 Hall of Famer Subscribing Member

    Sep 5, 2011
    It will equate to one half shutter speed increment if you're shooting wide open. So if you could shoot at, say, 1/4 second with the 1.6, you'd have to shoot at about 1/3 of a second with the 2.0. Not a huge difference since you'll need a tripod in either case.

    For this purpose, I wouldn't use the aperture as a primary consideration in choosing between lenses.
  4. LovinTheEP2

    LovinTheEP2 Mu-43 Top Veteran

    Feb 15, 2011
    Doubt it. However, you might want to compare both lenses sharpness when stopped down and see where each lenses sweet spot is. You might find you may gain 1 or 2 full stops and not just the 1/2f at wide open.
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