First star trails

Discussion in 'Landscape & Cityscape' started by Big, Mar 21, 2010.

  1. Big

    Big TPF Noob!

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    I gave it a shot last week over my vacation in Maine and I came up with this. I feel the focus is a little off. I set it to infinite. I don't think some people realize how hard it is to compose a shot in complete darkness! I thought it was kinda neat to see the satellite trails in the shot.
    C&C welcome!
    Thanks! -BIG :D

    The exif is
    3454 seconds (just short of an hour)
    ISO 100
    f/4

    [​IMG]
     
  2. Josh66

    Josh66 Been spending a lot of time on here!

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    Cool. You actually left your camera on, exposing, for almost an hour?

    I've always been scared to do that on a digital camera...lol. I think the longest I've ever done (digitally) was 15 minutes.


    Focus does look a little off... Maybe it needed to be just short of infinity...?
     
  3. Big

    Big TPF Noob!

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    Yup, it was just below freezing out so I wasn't too worried about the sensor overheating (I bet I'll get crap for saying that).
     
  4. astrostu

    astrostu I shoot for the stars

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    Yep, focus is off. Does the 50D have "live view?" I didn't think I would use it at all after years with my Rebel with just looking through the finder, but for astrophotography and focusing, the live view feature and super-high ISO on my 7D literally saves about 10-30 minutes of focusing hell. Remember that infinity on the lens is not where infinity will actually be. Very minute rotations (by a degree or so) will completely change the focus for star trails.
     
  5. plastii

    plastii TPF Noob!

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    Pretty cool.
     
  6. TJ K

    TJ K No longer a newbie, moving up!

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    Ya the focus is off a little. What I usually do is put up the ISO a bit and then do a semi quick exposure and check if it's all in focus and if it is then I lower the iso and do my shot. I really like the composition of the shot though, just keep working on it.
    TJ
     

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