Question and c&c on a long distance pic.

Discussion in 'Photography Beginners' Forum' started by soods, Apr 29, 2009.

  1. soods

    soods TPF Noob!

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    Ok, so I am just a wee bit curious. I was down at the river and a friend decided to come visit. However, he was about 300-400 feet away, and I don't feel that the bird is quiiiiite in focus. I could just be analyzing it too far. idk. lol.

    I was shooting with a Rebel xti and the canon 75-300. While standing in the river with no tripod.

    Does anyone care to share their secrets, other than changing your aperture, that will help with focusing on the bird? :D It was overcast and late in the day, so I didn't have much wiggle room.

    Any comments are appreciated!
    Thanks!
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  2. j-digg

    j-digg TPF Noob!

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    If the bird was that far away I think it would've been relatively easy to hit your focus ( check out the DoF Calculator if you haven't already, pretty nifty ). I assume you were at the very long end, close or at 300. You also have to take into consideration that this is a pretty low quality lens, and the IQ will be lower at the longest lengths of it. :confused: The first one looks pretty good I might add.
     
  3. Samanax

    Samanax TPF Noob!

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    What shutter speed were you using? I'm guessing you shot this at f/5.6.

    If you were zoomed all the way out to 300mm then camera/lens shake becomes a factor, especially if your shutter speed isn't fast enough (in this case you want a shutter speed of at least 1/320 or faster).
     
  4. j-digg

    j-digg TPF Noob!

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    Oh yes, and then there's that. :lol:
     
  5. soods

    soods TPF Noob!

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    That is true j-digg. I don't remember what f-stop I was at, but it was fairly wide open. So that's where my problem was coming from. (and I was getting pretty wet. lol) But hey, I am trying my best with a college budget. hahaha.

    The DoF caluator is great. That is pretty fun to play with. Thanks so much j-digg.
     
  6. Dmitri

    Dmitri No longer a newbie, moving up!

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    What they said. 1/100 is too slow to hand hold at 300m.

    If you don't want to deal with a tripod (and who does for nature photography?), buy a monopod. You'll wonder how you survived without one.
     
  7. soods

    soods TPF Noob!

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    thanks for that piece of information. im slowly grabbing more stuff off this site.

    and yeah it probably was 5.6, it had to be. and im sure i was at ISO 1600 or 800.
    i think it's time to upgrade...it would make this a little easier. lol.
     
  8. soods

    soods TPF Noob!

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    i have been interested in those dmitri... i now think i will give it a shot based on your awesome nature gallery. youve got some great pics in there.
     
  9. ANDS!

    ANDS! No longer a newbie, moving up!

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    You can handhold a lens of that length at 1/100th of a second. If the subject is moving quickly, sure you might have a problem, but proper handholding techniques are what you should be focusing on. Also there is nothing wrong with that lens - upgrading isn't going to get you anything exponentially different than what you are working with.
     
  10. Phranquey

    Phranquey TPF Noob!

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    You could shoot this @ 1/100th, but your technique had better be spot on. I am an experienced competition rifle shooter, which translates very well to hand-holding a camera, and I would have had trouble with that one.
    Ideally, you want your shutter speed to be the inverse of your focal length (300mm = 1/300th sec), but most people don't take into account the crop factor. Your field of view with a 300mm on a crop sensor digital is roughly equal to the field of view of a 450mm on an FX or film, so this will accentuate hand-held jitters even more....so at 300mm, you are really looking for 1/450th sec or faster.
    You are not using a bad lense, but it is known to be a little soft at full zoom. In order to maximize it's potential, you will want a monopod at the very least.
     

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