"Burnham Low Lighthouse" Long Exposure

Discussion in 'Critique Forum Archives' started by bishopsmead, Mar 13, 2005.

  1. bishopsmead

    bishopsmead TPF Noob!

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    [​IMG]
     
  2. mad_malteaser

    mad_malteaser TPF Noob!

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    Great composition and lighting. The colours are really fluid, and there's a strong sense of tranquility in this photograph. Gorgeous.
     
  3. mentos_007

    mentos_007 The Freshmaker!

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    Awesome!!! How long was the exposure?
     
  4. skiboarder72

    skiboarder72 No longer a newbie, moving up!

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    awesome, very smooth, i love it!
     
  5. bishopsmead

    bishopsmead TPF Noob!

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    On exposure time - its a stacked image, 20 photographs, each between 4-6 seconds each.

    So its an equivalent of approximately 100 sec. I did some genuine long exposures a few weeks back at the same location (2-5 mins) and the hot pixels were a real problem. This technique solves that problem.
     
  6. mcbphoto

    mcbphoto TPF Noob!

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    since this is a critique forum the only thing i would say is maybe expose it a little longer to brighten up the whole scene being that it seems kind of dark to me. great concept though im loving it.
     
  7. meotter

    meotter TPF Noob!

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    can you explain to me how a stacked image works? i'm not familiar with the technique. interesting photo though.
     
  8. bishopsmead

    bishopsmead TPF Noob!

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    There's a nice piece of software you can buy that stacks a set of pictures together and you can specify whether the software stacks the images (each pixel's values are accumulated) or averages them.

    Since each of the images was exposed (nearly) correctly, I chose to average the pictures, and hey presto, a long exposure is created

    This is not an advert: but more details are available here

    Cheers
     
  9. Kent Frost

    Kent Frost TPF Noob!

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    Out of curiosity, how many hot pixels were you getting to have to stack the images? I only get about 4, so I can paste right over them.
     
  10. Meysha

    Meysha still being picky Vicky

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    I love this picture. It's gorgeous and so serene!
    The only thing that bugs me are the blurred clouds. They're very pretty but they don't do it for me. But hey - ignore me coz I'm the only one who's mentioned it. he he :)
    BTW that is a really cool lighthouse!!
     
  11. bishopsmead

    bishopsmead TPF Noob!

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    I had dozens of them. Far too many to want to start cloning them out...
    But I was attempting very long exposures of betwen 3 and 6 minutes. I believe the problem gets worse and more hot pixels appear the longer the exposure.

    Under what circumstances do you get 4?
     
  12. Kent Frost

    Kent Frost TPF Noob!

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    Anytime really. Whether it's 1/100 sec or 30 seconds. Of course the higher the ISO, the more blatant they become. You can do a hot pixel test just by putting the cap on the lens and setting the camera for the different shutter speed increments. I can't quite remember where online the testing program is, but it simply counts them all for you. If you do it by eye, you can typically get an idea of how many you have.
     

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