how can i capture the background ?

jdeg

^ broke something
Staff member
Focus? Use manual on the lens if you have to.
 

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goz63

Senior Member
Manual or auto focus will not affect your background.
What you are referring to is depth of field "DOF". DOF is controlled by the aperture of the lens and the focal length. It also depends on how close the background is from the subject. When you have a lower f-stop the aperture is wide open and lets a lot of light in (f/1.4-5.6). This will cause the background to go out of focus as you create a shallow depth of field. That is to say, the area that is "in focus" is shorter (smaller). You also must make sure the background is a not right next to the subject or you might catch it "in focus" as well.
When you close down the aperature, say f/16 and up, you create a greater depth of field and the background is in focus.
This is a very basic explanation but if you look up "depth of field" on the net you will get a greater explanation. I highly recommend the book "Understanding Exposure" by Bryan Peterson. I have mentioned it on here many times. It will give you all you need to know on that subject.
Mark
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