How do I focus on one object in a photo and make the background blurry?

I have a Nikon D40, and I was wondering if anyone knew how I could achieve this. Aperture settings, Shutter settings, etc.





Also, If you have any other cool techniques that I could use, I'd really appreciate it.





Thanks.How do I focus on one object in a photo and make the background blurry?
Look at your guide Fishmeister, DOF changed with aperture and subject distance. The focal length of the lens merely magnified the example image and did not change the DOF.


I've noticed that what was once correctly called a perceived change is now accepted as a real change. One day DOF will be called Bokeh.





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The DOFMaster has discovered a new dimension? Set at 35mm film, 105mm, f/32, distance 1鈥?the calculation shows a DOF total of 0.03鈥?with In Front of Subject 0.02鈥?(49%) Behind Subject 0.02鈥?(51%)!How do I focus on one object in a photo and make the background blurry?
use a mode and use low aperture....u will have to mess around with it but use something below f6 and hold down shutter button half way on what you want to be in focus then take picture.








if you need anymore help or have more questions email me....will be glad to help
What you are asking about is Depth of Field (DOF). Three things control DOF:





1) Lens focal length.


2) The f-stop chosen.


3) Subject distance.





At http://www.dofmaster.com/dofjs.html you'll find a good explanation of DOF and a DOF Calculator. You can use the Calculator to compute DOF for any combination of focal length, f-stop and subject distance imaginable. The Calculator allows you to choose your particular camera so its completely accurate.
(A)perture Priority


Open aperture to lowest f number available (physically widest)


Zoom out


Move close to subject while maintaining focus on subject.


Enjoy blurred background








Research ';Depth of Field'; or ';DOF'; for complete details.
Using your camera in manual or aperture priority mode, set the aperture as wide as possible (the lowest value) for the lighting conditions. Move in close to your subject, focus and shoot.
You will have to change the focus mode.


Here is a link on how to do that (in the beige box at the bottom):


http://www.slrphotographyguide.com/camer鈥?/a>





The mode you need to use in order to focus on is the AF-S (area focus-single) mode.
I have noticed that most of these answers here think that aperture entirely controls DOF. This is not true.





There are three things that control it..





1) Aperture


2) Focal Length


3) Distance To Subject





This guide (with examples) will explain it better than I could..





http://bc-photo.smugmug.com/gallery/7394鈥?/a>





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';One day DOF will be called Bokeh.';... Most of the kids on here are already calling it that!.





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The longer your lense the blurrier your background, especially good for portraits.
You want to adjust your aperture.
use a large aperture