There are a few things to do that.
- For a beginner, setting your camera to AV (aperture priority) will allow you to easily adjust the aperture which is one of the reason for which part of the image should be blurry. The higher the Aperture (f) 8+, the more sharp the whole image will be. The lower it is (f1.8-1.2), the more blurry the picture will be around the subject.
- Your aperture’s capacity depends on your lens. Kit lens can only go so low at f3.5, some lenses like 50mm’s lowest is at f1.8 to 1.2.
- When you’re using 50mm have your APERTURE (f) to 1.8
- I would recommend using 85mm f1.8 USM (though this would mean the camera needs to be far away from the subject) This is a perfect affordable lens for portrait. With this lens, you can have a blurry background and a sharper subject than 50mm f1.8
- If you’re using the kit lens, make sure you’re at 18mm, with f3.5 and have the subject be CLOSE to the camera.
- If you want to have a picture with a wider background, then use a wide angle lens. You can use 28mm f1.8
- You can search for more lenses (some websites provide sample pictures) on google
DEPTH OF FIELD
- The farther the background is from the subject, the more lurry it’ll be. So if the background is just behind the subject, it is less likely to be blurry unless you edit it.
Difference between Kit lens (at 18mm) f3.5, 50mm f1.8 and 85mm f1.8
(in that order)
(I rarely use 50mm to take whole-body pictures and this is the closest I found in my files)