A&P advantages of long exposure times?

Discussion in 'Lifestyle' started by famous, Dec 24, 2006.

  1. famous

    famous OT Supporter

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    Looking at some of the pics at FredMiranda, a lot of them(scenery/landscape/ect) have 2-6 second exposures, maybe around afternoon?

    why?

    with a tripod, what does that do that shooting at 1/250 cant?
     
  2. mandarin orange

    mandarin orange OT Supporter

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    what is the f-stop? the higher the f-stop (smaller the aperature) the longer the shutter has to be open to properly expose the picture. since they are doing landscape shots, they dont want lots of bokeh or shallow depth of field. They want EVERYTHING to be in focus. I know when I shoot waterfall photos I use f/22 or the highest f-stop possible.. just to let the picture expose longer.
     
  3. SLIGHTLY

    SLIGHTLY OT Supporter

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    Also shooting dawn or dusk you dont have much light so shooting at the great f8 you end up with exposure times like that. And for landscapes dawn and dusk gives you the most interesting colors.
     
  4. Jcolman

    Jcolman OT Supporter

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    Another advantage of longer exposure times is that if there is any moving water in the shot it will come out blurred, making it appear smoother. However, the most likely reason is simply that the photographer wanted to shoot at a smaller aperature (for maximum sharpness) and use the finest grain film or lowest iso setting on his camera, both which require longer exposure times.
     
  5. mojito

    mojito New Member

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    difraction :run:
     
  6. Jcolman

    Jcolman OT Supporter

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    Depends. Up to a certain point, smaller aperatures will give you sharper pictures.

    Here's a good explanation of diffraction for the noobs.

    Diffraction is an optical effect which can limit the total resolution of your photography-- no matter how many megapixels your camera may have. Ordinarily light travels in straight lines through uniform air, however it begins to disperse or "diffract" when squeezed through a small hole (such as your camera's aperture). This effect is normally negligible, but increases for very small apertures. Since photographers pursuing better sharpness use smaller apertures to achieve a greater depth of field, at some aperture the softening effects of diffraction offset any gain in sharpness due to better depth of field. When this occurs your camera optics are said to have become diffraction limited. Knowing this limit can help you to avoid any subsequent softening, and the unnecessarily long exposure time or high ISO speed required for such a small aperture.
     
  7. californication

    californication New Member

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  8. amdspitfire

    amdspitfire New Member

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    [​IMG]

    you can get that out of pitch darkness
     
  9. ok_computer

    ok_computer OT Supporter

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    noob out of nowhere not reading the thread :ugh:
     
  10. mattsb2000

    mattsb2000 OT Supporter

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    You = 05

    Him = 04

    :hsugh:
     
  11. Jonny Chimpo

    Jonny Chimpo OT Supporter

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