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Thread: difference of ap... f/2.8 and f/4 anyone care to show picture difference.tnks^^

  1. #1
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    Default difference of ap... f/2.8 and f/4 anyone care to show picture difference.tnks^^

    anyone care to show the difference between a pic taken with the aperture of 4 and a pic taken with an apeture of 2.8

  2. #2
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    Default Re: difference of ap... f/2.8 and f/4 anyone care to show picture difference.tnks^^

    I don't have a pic, but with regards to the technicalities behind that (excluding DOF):
    If your shutter speed is 1/30 at f/4, you will get 1/60 at f/2.8 (twice as fast)
    or
    If your your shutter speed is 1/60 at f/4, ISO800, your shutter will be 1/60 at f/2.8, ISO400.

    f/2.8 vs f/4 is basically twice the amount of light.

    There's an fstop comparison here on a 200mm f/2.0L IS: http://www.the-digital-picture.com/R...ns-Review.aspx Scroll down

    Cheers
    Zexun
    Our pictures are our footprints. Itís the best way to tell people we were here - JoeMcnally | Flickr

  3. #3
    Member unseenshadows's Avatar
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    Default Re: difference of ap... f/2.8 and f/4 anyone care to show picture difference.tnks^^

    In addition to that, f/2.8 will have a shallower depth of field and rounder out-of-focus highlights, otherwise known as bokeh.
    I shoot film.

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