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Thread: noob shoot, why the surrounding does not blur out ?

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    Default noob shoot, why the surrounding does not blur out ?

    i have set my wife as the center focus and using F5.6 which is the lowest i can dial on Nikon d3100 on 18-55mm lens but how come the surrounding does not blur out . please guide me

    please help


  2. #2

    Default Re: noob shoot, why the surrounding does not blur out ?

    It's quite difficult to make the background blur with 5.6. Almost impossible. Try buying something like 35mm 1.8 DX lens and shoot at F1.8.

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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by xFamous View Post
    It's quite difficult to make the background blur with 5.6. Almost impossible. Try buying something like 35mm 1.8 DX lens and shoot at F1.8.
    but the default lens of D3100 some time can go low to 4.5 and some times at 5.6, no matter how much i dial , any idea?

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    Default Re: noob shoot, why the surrounding does not blur out ?

    with this picture i can get it , why the other one i cannot ? any tips ?


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    Senior Member Diavonex's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?

    1. Zoom in to 55mm

    2. Use the widest aperture

    3. Get as close to your wife as possible; shoot half body if possible

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    Moderator daredevil123's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by xFamous View Post
    It's quite difficult to make the background blur with 5.6. Almost impossible. Try buying something like 35mm 1.8 DX lens and shoot at F1.8.
    impossible? hmmmm....
    http://www.flickr.com/photos/jasonshanks/2072412206/
    http://www.flickr.com/photos/djh_cinemas/2272057474/
    http://www.flickr.com/photos/8363028...-29496069@N00/

    Before you say anything about the focal length...

    This is shot with D40 + 18-55 @ 55mm F5.6
    http://www.flickr.com/photos/mohdhanafiah/5066506395/

    Never say never....
    Last edited by daredevil123; 4th February 2011 at 04:35 PM.

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    Senior Member Diavonex's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?

    It's easier with a 50mm prime lens at F1.8 (see sample below)

    I focus on the first pillar


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    Moderator daredevil123's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?

    TS,

    Note that:

    1. The larger the aperture, the more blur you get in the background.
    2. The longer the focal length, the more blur you get in the background.
    3. The closer your lens is to your subject, the more blur you get in the background.
    4. The further the background is from your subject, the more blur you get in the background.

    Hope this helps.

  9. #9

    Default Re: noob shoot, why the surrounding does not blur out ?

    I dont reccomend offering instant ideas like 'buying a new lens' or 'you have to use 1.8 (f-stop) lens' kind of suggestions. Rather, it is important to know how each function works, and apply them to the situation as desired.

    Teaching you the how is the easy way. You will have to do your own research on WHY it works this way.

    Read up more on how your lens work, and how each function affects the result, then you will have learnt your WHY.
    The sooner you get it, the longer you enjoy it.
    I welcome you @ www.benaw.zenfolio.com

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    Default Re: noob shoot, why the surrounding does not blur out ?

    To give the background maximum blur, put your subject (wife) as close to you as possible, so that you get the greatest difference in distance between your clear subject (wife) and the background you intend to blur. The further your subject (wife) stands from you, the further your focal point is, and the closer your focal point is to the background, so it becomes less blur.

    Diavonex's example of focusing on the nearest pillar is excellent. If Diavonex had focused on the next pillar, all the further pillars would probably be almost in focus too

  11. #11

    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by chercm View Post
    but the default lens of D3100 some time can go low to 4.5 and some times at 5.6, no matter how much i dial , any idea?
    The kit lens is a variable aperture lens, it becomes smaller the more you zoom in. At 18mm the maximum aperture is f3.5, while at 55mm the max aperture is at f5.6.

    daredevil has pretty much explained everything that affects the amount of background blur you get. Your second shot has a blurred background because:
    1. Your lens was closer to the subject
    2. Your background became further away from the lens than the subject, because you moved closer to the subject.

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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by daredevil123 View Post
    TS,

    Note that:

    1. The larger the aperture, the more blur you get in the background.
    2. The longer the focal length, the more blur you get in the background.
    3. The closer your lens is to your subject, the more blur you get in the background.
    4. The further the background is from your subject, the more blur you get in the background.

    Hope this helps.
    that means i need to get the zoom lens to bring in my wife ( subject ) to get the background blurred?

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    Member tikiman's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by chercm View Post
    with this picture i can get it , why the other one i cannot ? any tips ?]
    I would advice you read-up and understand DOF and hyperfocal focusing. Extensive amount of info are available on google. Try this link.

    http://www.cambridgeincolour.com/tut...h-of-field.htm

    This will allow you to better understand why you cannot get bokeh in your first picture, and also how to get better bokeh with you current setup.

    Hope this helps too

  14. #14
    Senior Member Diavonex's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?


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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by tikiman View Post
    This will allow you to better understand why you cannot get bokeh in your first picture, and also how to get better bokeh with you current setup.

    Hope this helps too
    Your definition of "bokeh" is incorrect. At least the TS got it right.


    TS, in the second pic, your wife is closer to you; hence the background appears more blurred. In the first picture, the background is blurred, but it's just a little bit.
    Alpha

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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by Diavonex View Post
    thanks this is great information

  17. #17

    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by chercm View Post
    that means i need to get the zoom lens to bring in my wife ( subject ) to get the background blurred?
    actually i'm quite curious. why do you want to blur out the scenery. i suppose the 1st shot is to showcase your wife being at that place?

    not everything needs to be blurred out

    or is this thread started to ask a question on DOF?

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    Member tikiman's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by Rashkae View Post
    Your definition of "bokeh" is incorrect. At least the TS got it right.
    huh? please explain why am I incorrect, cause i also want to learn, thanks

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    Moderator daredevil123's Avatar
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    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by tikiman View Post
    huh? please explain why am I incorrect, cause i also want to learn, thanks
    I think bokeh refers to the quality of the blur. Not the blur itself.

  20. #20

    Default Re: noob shoot, why the surrounding does not blur out ?

    Quote Originally Posted by tikiman View Post
    huh? please explain why am I incorrect, cause i also want to learn, thanks
    i think what bro Rashkae means is the random usage of the term "bokeh" which actually means the quality of the background blur.

    bokeh refers to how nice/not nice the blur is

    background blur just refers to how blurred the background is.

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