Kinda Upset....

Discussion in 'Photography Beginners' Forum' started by benpsut, Jul 2, 2008.

  1. benpsut

    benpsut TPF Noob!

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    But I gotta keep trying. Once again I don't take things slow and just fire away at the shutter :) :) lol

    [​IMG]
    nothings really in focus except the house, should have closed the aperture more than it was.


    WHY all this noise even at an ISO of 100? I'm no COMPLETE beginner, been doing this for a little over a year and am really shocked at the noise. I cleaned the lens before i shot this, and the ISO was at 100. I shot this at 1 hour and 4 minutes with the aperture set a F9. Possibly because of the long exposure?

    [​IMG]

    Any help on the 2nd one would be appreciated, I know what i did wrong on the 1st one, just thought id share. Also here are some from a few days ago...

    [​IMG]
    [​IMG]


    Ben :mrgreen:
     
  2. Slaphead

    Slaphead TPF Noob!

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    Re no. 2. I'm fairly new to this but I think an exposure for 1 hour 4 minutes even on the lowest ISO setting is going to mean noise. In fact given the exposure length I'm impressed that it's not noisier.
     
  3. TamiyaGuy

    TamiyaGuy No longer a newbie, moving up!

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    I think long time exposures can generate "hot pixels", which are individual pixels completely red. Slaphead's right, though, I'm impressed it isn't noisier.

    All of the images seem to be a bit underexposed, but other than that, nice work!
     
  4. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    Why be upset? You've already identified the problem, you need to slow down and (if you'll pardon the pun) focus on what you're doing. The award-winning image you see in a gallery, or full-page ad in Sports Illustrated? You can bet that one image is the result of hundreds of megabytes of deleted data, and hours of work. Just like a painter doesn't create a masterpiece in two minutes, nor is a photograph (usually).

    Again, you've answered your own question. One of the areas of photography for digital isn't ideally suited are very long exposures. This is because over time the sensor heats up and induces noise; in this case, extreme noise. There are programs such as Noise Ninja which will reduce this, but like all software, they're only so good.

    Just my $00.02 worth - your milage may vary.

    ~John
     
  5. rdompor

    rdompor TPF Noob!

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    I think that what you're seeing here is motion blur rather than a consequence of the aperture being too wide. Since the scene appears to have been rather dark, I assume you had to use a long exposure time to get the shot and well, clouds move.
     
  6. doenoe

    doenoe TPF Noob!

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    In #1 its motion blur from the clouds. If im correct you used a 30 second exposure. In that time the clouds will move a bit, which causes the blur. The house isnt going anywhere, so its sharp. Closing up the lens will not help, since you will a longer shutterspeed. Thus making the clouds even more blurred.
     
  7. benpsut

    benpsut TPF Noob!

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    Thanks for the help guys, so in a situation where I want to freeze motion but keep that low light to show off the colors of the sun setting such as the house and clouds, what should I do? Increase the shutter speed and open up the aperture? I guess this is one of those situations where bryan peterson calls it a "who cares" aperture. Where everything is in focus.
     
  8. rasheemo

    rasheemo TPF Noob!

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    i would think increasing aperture and shutter speed would resolve this problem. Do you have the EXIF information?
     
  9. benpsut

    benpsut TPF Noob!

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    Eh, not on this computer, but im pretty sure the aperture was closed up. Thank you ALL for the help! :) really appreciate it!
     
  10. Mystwalker

    Mystwalker TPF Noob!

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    Sorry - can you elaborate on this?

    I thought it was a 30-sec shot. How will increasing the shutter speed help when it is set for 30-sec? Also, I thought, to get shots with shutter open for a longer time, you need to be in "bulb" mode? This setting on Canon is controlled by shutter speed wheel - basically, "bulb" is shutter speed on Canon, I think. Now am really confused :(
     
  11. rasheemo

    rasheemo TPF Noob!

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    well increasing aperture would be increasing exposure kind of like having a long shutter. but since the clouds move he must increase the speed of the shutter to prevent the blurring.

    i could be wrong though =[
     
  12. sabbath999

    sabbath999 No longer a newbie, moving up!

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    His EXIF:

    Equipment Make: Canon
    Camera Model: Canon EOS DIGITAL REBEL XTi
    Camera Software: Adobe Photoshop Elements 4.0 Windows

    Image-Specific Properties:

    Exposure Time: 30 sec
    F-Number: f/8.0
    Exposure Program: Manual
    ISO Speed Rating: 100
    Lens Aperture: f/8.0
    Exposure Bias: 0 EV
    Flash: No Flash, Compulsory
    Focal Length: 55.00 mm
    Color Space Information: sRGB
    Image Width: 1000
    Image Height: 667
    Rendering: Normal
    Exposure Mode: Manual
    White Balance: Auto
     

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