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Thread: Landscape clear focus problem

  1. #1

    Default Landscape clear focus problem

    Hi peeps, I think I have a problem in focusing clearly through viewfinder and lcd.


  2. #2
    Moderator catchlights's Avatar
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    Default Re: Landscape clear focus problem

    what's seem to be the problem?
    why don't just use single focusing point and focus on the jetty?
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  3. #3
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    Default Re: Landscape clear focus problem

    Do not understand what you mean too

  4. #4

    Default Re: Landscape clear focus problem

    you need to provide us with more details, so we can provide better advise.

    Like your settings, MF/AF, aperture and so on.

    Possible reason for less-sharp pics are:

    misfocus
    IS on while on tripod
    Movement due to unstable tripod
    diffraction due to very small aperture use may also cause pic to be less sharp

    for landscape shooting, learn to manual focus and read up on hyper focal distance.
    Last edited by chiangkxv; 6th August 2011 at 11:01 AM.

  5. #5

    Default Re: Landscape clear focus problem

    sorry about the lack of details.. I took this photo on a tripod using a canon 60d w/ tamron 17-50mm non-VC lens. I viewed through the viewfinder and LCD, I believe it was clearly focus. I did use the jetty as the focusing point (manual focus). Now the photo came outout of focus.. Is it my eyes or is it me using the wrong technique to focus?

  6. #6

    Default Re: Landscape clear focus problem

    Aperture is at f/32 @ 17mm, shutter speed: 10 secs, ISO 100

  7. #7
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    Default Re: Landscape clear focus problem

    which part of the photo is not sharp? which part of the photo you want it sharp sharp??

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    Default Re: Landscape clear focus problem

    Quote Originally Posted by moment-sg View Post
    Aperture is at f/32 @ 17mm, shutter speed: 10 secs, ISO 100
    Probably it's diffraction..try using a larger aperture.probably f/8-16
    Last edited by SkyStrike; 6th August 2011 at 11:09 AM.
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  9. #9

    Default Re: Landscape clear focus problem

    Quote Originally Posted by Reno View Post
    which part of the photo is not sharp? which part of the photo you want it sharp sharp??
    To me.. the entire photo isn't sharp =X

  10. #10
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    Default Re: Landscape clear focus problem

    Quote Originally Posted by moment-sg View Post
    To me.. the entire photo isn't sharp =X
    motion blur on cloud and water, your exposure at 10 sec is too long. If you want everything to be sharp, try shoot at F11 and faster shutter....

  11. #11

    Default Re: Landscape clear focus problem

    Quote Originally Posted by Reno View Post
    motion blur on cloud and water, your exposure at 10 sec is too long. If you want everything to be sharp, try shoot at F11 and faster shutter....
    I see.. thanks Reno. So its not my eye focusing problem? cos I am wearing spectacles and my specs seems to have slight barrel distortion.. hope it does not affect my focusing

  12. #12
    Moderator catchlights's Avatar
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    Default

    You don't need use f32. There is not foreground. If you want to lengthen the shutter speed, use nd filter.
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  13. #13

    Default Re: Landscape clear focus problem

    Quote Originally Posted by moment-sg View Post
    I see.. thanks Reno. So its not my eye focusing problem? cos I am wearing spectacles and my specs seems to have slight barrel distortion.. hope it does not affect my focusing
    I seriously thought you were trying to do long exposure and know what you are doing..

    By doing long exposure, trees, water, clouds and all non stationery objects cannot be sharp because they move.

  14. #14

    Default Re: Landscape clear focus problem

    Quote Originally Posted by chiangkxv View Post
    I seriously thought you were trying to do long exposure and know what you are doing..

    By doing long exposure, trees, water, clouds and all non stationery objects cannot be sharp because they move.
    Actually I am doing long exposure. But at least the jetty should be sharp.. to my eyes its not.

  15. #15

    Default Re: Landscape clear focus problem

    Quote Originally Posted by moment-sg View Post
    Actually I am doing long exposure. But at least the jetty should be sharp.. to my eyes its not.
    Then the cause should be those discussed above.

  16. #16

    Default Re: Landscape clear focus problem

    Quote Originally Posted by moment-sg View Post
    Actually I am doing long exposure. But at least the jetty should be sharp.. to my eyes its not.
    Because of diffraction....
    Alpha

  17. #17
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    The only type of lens I know can tahan F/32 safely without visible diffraction is a macro lens. Just my opinion, not fact.
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  18. #18

    Default Re: Landscape clear focus problem

    as the rest have mentioned: diffraction and movement.

    also as to why the jetty isn't sharp? it looks to be on stilts? they're pretty unstable
    Last edited by kei1309; 7th August 2011 at 02:09 AM.

  19. #19
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    Default Re: Landscape clear focus problem

    Quote Originally Posted by kei1309 View Post
    as the rest have mentioned: diffraction and movement.

    also as to why the jetty isn't sharp? it looks to be on stilts? they're pretty unstable
    some possible reason
    1. Improper exposure.
    2. Vibration on ground.
    3. heat wave.

    May sound illogical.... lol

  20. #20

    Default Re: Landscape clear focus problem

    Quote Originally Posted by Reno View Post
    some possible reason
    1. Improper exposure.
    2. Vibration on ground.
    3. heat wave.

    May sound illogical.... lol
    lol heatwave in the evening? pretty rare.

    but vibration on the ground is very likely.

    but most likely cause is the slow shutter speed and diffraction at f32.

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