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Thread: Can prosumer take good depth of field effect shots

  1. #1

    Default Can prosumer take good depth of field effect shots

    Pretty amazed with this effect which my normal camera cant take. Thinking of getting a better cam. Can experts here advise on this? Any particular model or specs i should look out for in achieving this effect?

    Thanks in advance!

  2. #2
    Moderator catchlights's Avatar
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    Default Re: Can prosumer take good depth of field effect shots

    As long

    your subject small enough,
    you go close enough,
    the background is far enough
    and you are using widest aperture with the longest focal length lens

    you can get shallow DOF effect from any cameras
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  3. #3

    Default Re: Can prosumer take good depth of field effect shots

    Quote Originally Posted by catchlights View Post
    As long

    your subject small enough,
    you go close enough,
    the background is far enough
    and you are using widest aperture with the longest focal length lens

    you can get shallow DOF effect from any cameras
    Hi,

    What about bigger object like human with blur background?
    Is there restriction in this case?
    Many thanks for the effort to reply.

  4. #4
    Senior Member zac08's Avatar
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    Default Re: Can prosumer take good depth of field effect shots

    Most of the times, it's pretty difficult as the aperture for such cameras are small and it would give you a much longer DOF than what you want to achieve for the bokeh shots.

    Often, such photogs would resort to PP to get the desired effects.
    Michael Lim
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  5. #5
    Moderator catchlights's Avatar
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    Default Re: Can prosumer take good depth of field effect shots

    I'm not sure about prosumer camera, cos I don't own one, but for a full length human, on a 1.5x DSLR, you need at least a 90mm lens shoot at wide open, if you using a longer lens, the effect will be more pronounced.
    Shoot to Live, Live to Shoot
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  6. #6

    Default Re: Can prosumer take good depth of field effect shots

    Quote Originally Posted by ralfale View Post
    Pretty amazed with this effect which my normal camera cant take. Thinking of getting a better cam. Can experts here advise on this? Any particular model or specs i should look out for in achieving this effect?

    Thanks in advance!
    if you can create blurred background or not does not depend on prosumer or pro camera.... it depends on your sensor size.
    it is practically impossible to achieve shallow DOF (and hence blurred background) with the tiny sensors installed in most point and shoot cameras. What you need is a sensor of minimum APS size. you find this size in DSLR but maybe also in some of the bigger point and shoot. A D40 would work nice and this camera is considered consumer....
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  7. #7

    Default Re: Can prosumer take good depth of field effect shots

    Hi,

    which means to say, on a prosumer camera, such shots are unable to achieve
    http://www.bryanhansel.com/grandmara...061025-110.jpg

    i wanted a almost 80-90% blur effect. Only DSLR can achieve this is it?

  8. #8

    Default Re: Can prosumer take good depth of field effect shots

    I suppose you mean shallow DOF.

    Prosumer cameras can only achieve shallow DOF with small objects. Bigger objects require you to stand further to shoot or use a shorter focal length and due to the relatively short actual focal length used on prosumer cameras (due to the small image sensor), you cannot achieve a distinctively shallow DOF.

    So for human portraits (even half body), a shallow DOF cannot be achieved by a prosumer camera.

    Below are a couple of pictures where a shallow DOF is achieved by a Nikon Coolpix 5700 (a prosumer camera) because the object is small which allows you to go very near to shoot with a very short focal length or still quite near even when the camera is fully zoomed).



    Last edited by Clockunder; 10th January 2008 at 01:49 PM.

  9. #9

    Default Re: Can prosumer take good depth of field effect shots

    I see ... so can a D40 achieve such results? I can get a 2nd hand D40 at classified

  10. #10

    Default Re: Can prosumer take good depth of field effect shots

    Quote Originally Posted by ralfale View Post
    I see ... so can a D40 achieve such results? I can get a 2nd hand D40 at classified
    Again, it depends on the subject size (i.e. what you're shooting).

    You may also need lenses with apertures bigger than F/2.8 and these lenses are expensive. For portraits (half body), you would need F/1.8 or bigger. For full body portrait, you need an even bigger aperture.

    Also don't forget that D40 can only auto focus with AFS lenses and many big aperture lenses are not AFS lenses.

    Check out the DOF calculator : http://www.dofmaster.com/dofjs.html

    You can approximate the shooting distance by doing some calculation yourself in the following manner :

    D40 sensor size = approximately 24mm x 16mm

    If the subject is for e.g. 80cm (half body portrait), then the magnification factor necessary to get it into your image sensor in portrait framing is :

    24mm/800mm = 3/100

    If you're using 50mm focal length, then the approximate shooting distance slightly further than :

    50 / (3/100) = 1667mm = 1.67m
    Last edited by Clockunder; 10th January 2008 at 03:04 PM.

  11. #11
    Senior Member dorts's Avatar
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    Default Re: Can prosumer take good depth of field effect shots

    Quote Originally Posted by Michael View Post
    if you can create blurred background or not does not depend on prosumer or pro camera.... it depends on your sensor size.
    it is practically impossible to achieve shallow DOF (and hence blurred background) with the tiny sensors installed in most point and shoot cameras. What you need is a sensor of minimum APS size. you find this size in DSLR but maybe also in some of the bigger point and shoot. A D40 would work nice and this camera is considered consumer....
    I'll like to correct you here. The Four Thirds sensor size, which is smaller than the APS-C size can archive this too.

    If you wanna play with DOF, DSLR is best. Since you can go for prosumer, size is about the same, so just go for DSLR.

  12. #12

    Default Re: Can prosumer take good depth of field effect shots

    Quote Originally Posted by ralfale View Post
    I see ... so can a D40 achieve such results? I can get a 2nd hand D40 at classified
    depending on the lens that you are using to take the photo.

    get at least a 105 VR micro lens will be prefered if u getting the D40

  13. #13

    Default Re: Can prosumer take good depth of field effect shots

    Thanks guys! I shall explore more on DSLR and consider a 2nd hand one to try.

  14. #14

    Default Re: Can prosumer take good depth of field effect shots

    Quote Originally Posted by ralfale View Post
    I see ... so can a D40 achieve such results? I can get a 2nd hand D40 at classified
    a D40 can certainly achieve this...
    Never forget rule 5
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  15. #15

    Default Re: Can prosumer take good depth of field effect shots

    Quote Originally Posted by dorts View Post
    I'll like to correct you here. The Four Thirds sensor size, which is smaller than the APS-C size can archive this too.

    If you wanna play with DOF, DSLR is best. Since you can go for prosumer, size is about the same, so just go for DSLR.
    of course the Four Thirds can do as well... i took APS size in a more general way.... not just Nikon size sensor... also the canon sensor is a bit smaller than nikon...

    what i meant to say is that not the level of camera (consumer, prosumer, pro) is important but rather the sensor size...
    Never forget rule 5
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  16. #16

    Default Re: Can prosumer take good depth of field effect shots

    a prosumer will have limited dof. basically the only time when you can get reasonable dof with regards to humans, is when your human is damn far far away from the background.. mainly because of what has been mentioned - two factors, primarily sensor size, and secondarily the maximum aperture for most prosumers across the board is limited. the best you can do with regards to humans is to extend to maximum zoom, try to get your subject to stand far far away from background, and then shoot with wide open lens.

    if you're talking about MACRO, however, then prosumer can do it, just shift to macro mode and do the same thing.

    ironically, my favourite dragonfly shot is taken with a prosumer:



    without any close-up filters, etc.. just cropping and reasonable sharpening.

    some people like using prosumers to shoot macro.. since dof is what you need most of the time for quick shutter speeds (relative)..

  17. #17

    Default Re: Can prosumer take good depth of field effect shots

    Nice....



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