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Thread: Where Do You Focus?

  1. #1

    Default Where Do You Focus?



    Borrowing a shot from Flickr to illustrate a question i have... which is; where do you generally focus on a shot like this to get as much of the picture sharp as possible? And what aperture would you shoot it at?

    I read about hyperfocal length but you know how the new lenses are these days without a distance gauge...

  2. #2
    Senior Member sunnycamera's Avatar
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    Default Re: Where Do You Focus?

    focus infinity, f8 to f16,

    equip focal length, 35 to 50mm range,

    my guess
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  3. #3
    Senior Member darrrrrrrrrr's Avatar
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    Default Re: Where Do You Focus?

    http://www.digital-photography-schoo...pe-photography

    Recommends you focus about a third of the way in to keep the foreground nice and sharp.

    In this case I'd personally focus on the blue part of the boat since that's the foreground subject of interest. Then stop down till about f/11 to maximize DOF without diffraction softening.

  4. #4

    Default Re: Where Do You Focus?

    thats the thing it some pple say 1/3 way in, some say infinity...

  5. #5

    Default Re: Where Do You Focus?

    get a DA15 for the scale. Hahaha.
    --

  6. #6

    Default Re: Where Do You Focus?

    on a serious note though, I would focus on the center of the image, which happens to be the first red "leg", and set the aperture to between f/11-16.

  7. #7
    Senior Member darrrrrrrrrr's Avatar
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    Default Re: Where Do You Focus?

    But if you focus at infinity you lose half of the DOF right?

  8. #8

    Default Re: Where Do You Focus?

    Depend on focal length . If I using my 8mm I will use F11 and focus on the white part that is very near to me . 8mm in crop with f11 should bring everything in focus as long as u are 20cm a part from focus point
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  9. #9

    Default Re: Where Do You Focus?

    you know, i once just focused on the furthest point and for most cases where the foreground is not so impt, it looks ok... i tried a few times at 1/3 but tend to lose background and mid-area sharpness even at f22...

    i think Machiavellian is correct. maybe it takes abit of "spatial awareness" to work out where exactly is 1/3 depth of the way into the entire scene...

  10. #10

    Default Re: Where Do You Focus?

    Quote Originally Posted by Supersimon27 View Post
    Depend on focal length . If I using my 8mm I will use F11 and focus on the white part that is very near to me . 8mm in crop with f11 should bring everything in focus as long as u are 20cm a part from focus point
    Hi Simon, what does "8mm in crop" mean...

  11. #11

    Default Re: Where Do You Focus?

    Quote Originally Posted by GSiGuy View Post
    Hi Simon, what does "8mm in crop" mean...
    8mm in crop = 12mm
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  12. #12

    Default Re: Where Do You Focus?

    Quote Originally Posted by Supersimon27 View Post
    8mm in crop = 12mm
    Oh! Sorry... knock head! silly me..

    Anyway i suppose following from hyperfocal length calculation then the bigger the FL the further away?

  13. #13

    Default Re: Where Do You Focus?

    Quote Originally Posted by GSiGuy View Post
    Oh! Sorry... knock head! silly me..

    Anyway i suppose following from hyperfocal length calculation then the bigger the FL the further away?
    yup, the wider the focal length, the more leeway it is for hyperfocal. And by f/22, diffraction occurs, which resulted to you not being able to get sharpness in the overall picture. Though at f/16, diffraction does occur, but less pronounced and in most cases, it's still usable.
    --

  14. #14

    Default Re: Where Do You Focus?

    Quote Originally Posted by machiavellian View Post
    yup, the wider the focal length, the more leeway it is for hyperfocal. And by f/22, diffraction occurs, which resulted to you not being able to get sharpness in the overall picture. Though at f/16, diffraction does occur, but less pronounced and in most cases, it's still usable.
    i blame bryan peterson for shooting scapes at f22 :-(

  15. #15
    Senior Member darrrrrrrrrr's Avatar
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    Default Re: Where Do You Focus?

    Just focus bracket and blend later lor.. If you wanna cheat the laws of physics that's the only way to do it to get maximum sharpness throughout.

  16. #16

    Default Re: Where Do You Focus?

    Quote Originally Posted by darrrrrrrrrr View Post
    Just focus bracket and blend later lor..
    i wish i know how to do that...

  17. #17

    Default Re: Where Do You Focus?

    Quote Originally Posted by GSiGuy View Post
    i wish i know how to do that...
    It's also called stacking... take two or more shots of the same view (better use a tripod), but each shot focus at different part of the frame, normally one at the infinity, one at the middle and one at the foreground should be more than enough for landscapes. Later on merge three shots together in photoshop...

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    Default Re: Where Do You Focus?

    Quote Originally Posted by fengwei View Post
    It's also called stacking... take two or more shots of the same view (better use a tripod), but each shot focus at different part of the frame, normally one at the infinity, one at the middle and one at the foreground should be more than enough for landscapes. Later on merge three shots together in photoshop...
    If I may add, also do different exposures on the sky, sea and land.
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  19. #19
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    Default Re: Where Do You Focus?

    1/3 is just a guide... in fact everything is just a guide...

    looking at the image... the white thing on the foreground is so huge and right in your face... its gonna be irritating if thats not well focused...

    no ppl subject just use tripod and focus stack foreground and background... else i just go for the foreground... that little resting hut in the background is just a supporting cast to me....
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  20. #20
    Senior Member oceanpriest's Avatar
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    Default Re: Where Do You Focus?

    Quote Originally Posted by GSiGuy View Post
    i blame bryan peterson for shooting scapes at f22 :-(
    Ansel Adams routinely shot landscapes at f32 (his favorite), but that's for large format. With smaller circle of confusion on aps-c, the diffraction is enlarged and visible with lower f-stops. Not to mention the pixie dust on digital

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