Soft blurry backgrounds in portraits – in most cases are a great way to highlight your main subject and get rid of any distractions in the background. Here are a number of easy ways to achieve this:
Positioning of Subject
One of the easiest things you can do is position the subject you’re wanting to photograph as far away from any objects behind them as possible. If they are standing right in front of a wall you’ll probably end up with it in focus no matter what else you do – but if they’re standing 100 meters in front of that same wall it’s going to be a lot more blurry. Of course this will only get you so far – you’ll need to do some of what’s coming next as well.
Portrait Mode
Portrait mode chooses a large aperture (a small ‘f’ number) which will make the depth of field (the amount of your shot in focus) smaller.
Aperture Priority Mode
If you’re feeling a little more adventurous switch the wheel to ‘A’ which is Aperture Priority Mode. This mode lets you choose the Aperture (the size of the hole in your lens) and tells the camera to choose all the other settings. This semi-auto mode is a great way to control depth of field as it will ensure your images are well exposed. For shallow depth of field and nice blurry backgrounds choose a large Aperture (the smaller the number the larger the aperture). Try taking a few shots at different apertures and see how it affects the background of your shots – this is the best way to learn how to get more creative control in your shots.
Zoom Lenses
Many zooms will have different maximum apertures at different points along the focal length spectrum. For example if you have an 18-55mm kit lens, it will have a maximum aperture of f3.5 at 18mm and a maximum aperture of f5.6 at 55mm. Many see the bigger aperture at the 18mm end of the range and think that it would be the best focal length for blurry backgrounds. The problem with this is that 18mm is a very wide angle and for portraits it can mean you need to get in really close to your subject and it could distort their facial features (not really desirable).
Shooting at the 55mm end of the lens is best. This means you can stand further back (making your subject more at ease and pushing your background even further away from your camera). You’ll probably still get nice blurry backgrounds if you use the fastest aperture available. The other good thing about zooms is that they enable you to really fill up your frame with your subject which can give it more prominence and your background less.
Get a New Lens
This is an ‘easy’ solution in some ways, but hard if you don’t have the budget. Different lenses have different maximum apertures. Those with larger ones are called ‘faster’ and one of the impacts of having a fast lens is that you can make your depth of field smaller (another is that you can shoot in lower light situations without needing the flash). A good option for Canon DSLRs is the Canon 50mm f/1.8 lens. It’s very fast, it’s a good focal length for portraits and it is one of the most affordable lenses Canon make.
