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Thread: Explain this phenomenon with optical theory?

  1. #1

    Question Explain this phenomenon with optical theory?

    When I shoot the buildings with 300mm lens from a few kilometers away, the
    lines obviously become spoilt but it doesn't look like jaggies caused by the resizing.




    How do I explain this in theory?

  2. #2
    Moderator catchlights's Avatar
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    Default Re: Explain this phenomenon with optical theory?

    hot air
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  3. #3

    Default Re: Explain this phenomenon with optical theory?

    more specifically

    atmospheric refraction, the same thing that causes mirages, and in lesser degree the "shimmering" effect here

    read this

    then again, maybe is handshake, i don't know hurhur, but science wise, assuming that you did all the shooting correct that should be the explanation

  4. #4

    Default Re: Explain this phenomenon with optical theory?

    i think is the heat waves that causes some degree of distortion to the final picture.

    light cannot travel in an absolute straight line because of the air molecules?
    random equipment.
    where are my primes?

  5. #5

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by night86mare View Post
    more specifically

    atmospheric refraction, the same thing that causes mirages, and in lesser degree the "shimmering" effect here

    read this

    then again, maybe is handshake, i don't know hurhur, but science wise, assuming that you did all the shooting correct that should be the explanation
    yeah, i guess that is the theory!
    thank you!

  6. #6

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by wanzw View Post
    i think is the heat waves that causes some degree of distortion to the final picture.

    light cannot travel in an absolute straight line because of the air molecules?
    didn't see that in naked eyes though.
    density of air in different places are different.. then deflects(?)/defract(?) light rays.. am i right?

  7. #7

    Default Re: Explain this phenomenon with optical theory?

    same theory as mountains in the horizon has a different hue due to dust &/or moisture in the atmosphere

  8. #8

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by dRebelXT View Post
    didn't see that in naked eyes though.
    density of air in different places are different.. then deflects(?)/defract(?) light rays.. am i right?
    actually I think you can see this effect with your naked eyes.. if you have been stuck in a traffic jam before and looked at the whole line of vehicles infront of you..

    yea, light refracts when it passes through mediums of different density..

  9. #9

    Default Re: Explain this phenomenon with optical theory?

    you have a lemon. time to go service centre.

  10. #10
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    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by wanzw View Post
    i think is the heat waves that causes some degree of distortion to the final picture.

    light cannot travel in an absolute straight line because of the air molecules?
    hahha you just lost me there...

  11. #11

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by J-Chan View Post
    actually I think you can see this effect with your naked eyes.. if you have been stuck in a traffic jam before and looked at the whole line of vehicles infront of you..

    yea, light refracts when it passes through mediums of different density..
    yeah, engine exhaust..
    camp fire also can see that.

  12. #12

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by night86mare View Post
    more specifically

    atmospheric refraction, the same thing that causes mirages, and in lesser degree the "shimmering" effect here

    read this

    then again, maybe is handshake, i don't know hurhur, but science wise, assuming that you did all the shooting correct that should be the explanation
    yup. the article explains it all

    nothing to do with the lens or the cam

  13. #13

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by J-Chan View Post
    actually I think you can see this effect with your naked eyes.. if you have been stuck in a traffic jam before and looked at the whole line of vehicles infront of you..

    yea, light refracts when it passes through mediums of different density..
    Actually, I believe thats the gas fumes

    But I do think it's possible to see with naked eyes. Not in Singapore at least, but I see it sometimes in "HOT" countries.

  14. #14
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    Default Re: Explain this phenomenon with optical theory?

    I would think that is the same phenomenon for mirage, where hot air and cool air having different refractive index.

    http://en.wikipedia.org/wiki/Mirage
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  15. #15

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by GavinTing View Post
    Actually, I believe thats the gas fumes

    But I do think it's possible to see with naked eyes. Not in Singapore at least, but I see it sometimes in "HOT" countries.
    ??? Tell me please .

  16. #16

    Default Re: Explain this phenomenon with optical theory?

    Just look at the car surface under hot sun and u can observe this effect.

  17. #17

    Default Re: Explain this phenomenon with optical theory?

    Quote Originally Posted by BUZ_BUZ View Post
    ??? Tell me please .
    Hot refers to very very hot countries, like Egypt.

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