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Thread: Long exposure noob question

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    New Member Grillman's Avatar
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    Long exposure noob question

    Hi guys,

    I have been trying some long exposures but too much light is coming in.

    Would you guys think the only issue is not having an ND filter?

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    Ausphotography Regular bitsnpieces's Avatar
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    Pretty much. ND filter will cut that light down, that way you can allow the longer exposure and not have the over excess light come in.

    There are other ways too, having a higher aperture number, meaning you won't get the low depth of field - but if that's not an issue, then just make sure your ISO is at it's lowest, set the exposure time, and bump up the aperture value until you get it dark enough to sit and allow the exposure lighten it up.

    But as mentioned, if you want the shallow depth of field, you need the ND filter so you can keep the aperture was wide as possible.
    Last edited by bitsnpieces; 28-05-2014 at 2:32pm.

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    Member raysul's Avatar
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    If you're photographing a bright sunny day, and you're on your smallest f-stop, and the lowest ISO and you still can't get the correct exposure being to bright then yes and ND filter would help.

    Ray
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    Arch-Σigmoid Ausphotography Regular ameerat42's Avatar
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    This is...

    Quote Originally Posted by Grillman View Post
    Hi guys,

    I have been trying some long exposures but too much light is coming in.

    Would you guys think the only issue is not having an ND filter?
    ...not enough info to give any sort of meaningful reply.

    Details about subject, illumination, camera settings, are what we chiefly need.

    Am.
    CC, Image editing OK.

  5. #5
    It's all about the Light!
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    Read this first... http://www.ausphotography.net.au/for...long_exposures

    then answer Am's questions and we can help you
    regards, Kym Gallery Honest & Direct Constructive Critique Appreciated! ©
    Digital & film, Bits of glass covering 10mm to 500mm, and other stuff



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    Well I was trying to take long exposures of this Golden Pavilion https://www.google.com.au/search?q=k...w=1842&bih=925

    It was a bright sunny day, after midday. I was using shutter priority anywhere from 1 to 5 seconds. The data from one photo says 1 second exposure, F22, ISO 100.
    Last edited by Grillman; 28-05-2014 at 7:50pm.

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    Ausphotography Regular Boo53's Avatar
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    Its a lovely looking building, but I'm still wondering why you're trying a long exposure on a bright sunny day when it doesn't really seem necessary

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    Arch-Σigmoid Ausphotography Regular ameerat42's Avatar
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    Doing a bit of a backward equivalence of exposure values:
    1 sec, f/22
    1/2 sec, f/16
    1/4 sec, f/11

    ...Nope. For a sunny day at ISO100, typical exposure would be about
    160 sec, f/11... Maybe up to 1/200sec, f/11.

    To answer your original Q, the issue would be an ND filter in this case. One that has about a 5-stop density rating.

    But, as has been said above, why use an ND filter at all for these shots?
    Am.

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    Ausphotography Regular bitsnpieces's Avatar
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    Just one guess from me is that he wanted the water to look more misty than just a nice reflection.

    Or a certain light to have a shine to it I guess.

    It'll be interesting to see the results though

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    Yes exactly, I wanted the water have a blurry smoothness.

    I ended up doing that with photoshop but it's not ideal.

    I guess I thought that the image wouldn't have turned out perfect but that it would be something I could sort out in post. But as it turned out the images were unusable.

  11. #11
    Arch-Σigmoid Ausphotography Regular ameerat42's Avatar
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    OK, the first shall be last, and all that...
    So, I estimated about a 5-stop ND filter. That would be minimum. Maybe go more...10-stops?
    Am.

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    Photo Bizarro nimrodisease's Avatar
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    As others have said... to be shooting shutter speeds > 1s in broad daylight, there is just no question that you will need an ND filter. I would definitely be suggesting a 10 stop filter for daylight long exposures. Anything less and you will likely find yourself still wanting more.
    My name is John.
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    Ok thanks guys!

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