Checklist: How to take portraits with blurred backgrounds
1: Switch your camera to Aperture Priority mode by turning the mode dial to ‘A’ or on Canon models, ‘Av’.
2: Stand back a little and zoom-in your lens – this will accentuate the effect.
3:
Choose the smallest f-number that’s available. If you’re using a kit
lens and you’re zoomed-in, this will normally be around f5.6.
4:
To further accentuate the effect, increase the distance between the
subject and the background. So keep the person relatively close to you
for a head and shoulders shot, and position them against distant
background.
5: After taking your photo, remember to set the mode dial back to Auto or Program mode.
Equipment tip
If
you really like the blurred background effect you should consider
buying a lens which has a bigger aperture, and therefore a smaller
f-number. These can give a much greater blurring effect than a kit lens.
Lenses
with smaller f-numbers can be expensive, but there’s one popular
exception which is also perfect for portraits. Look out for a standard
50mm lens with an aperture of around f1.8 or even smaller. Affordable
50mm lenses are available for every DSLR and can give a far greater
blurred background effect than a typical kit lens. They may not zoom,
but 50mm is an ideal length for portraits and will deliver better
quality than most zooms. Note Nikkor’s 50mm f1.8 lens is not an AF-S
model, so it won’t autofocus on the D40 or D40x models.