Improve Outdoor Portraits 1000 Percent With Large F/Stops: Use large F/Stops to keep the attention on your subject.
Great pictures are all about keeping the attention on the subject. Try this experiment.
Take a model, your camera, and a tripod to an outdoor location. Take a photo of your model at f/16 and another at f/4.
Now take a look at the prints or digital images. In the f/4 photo, the subject wll stand out from the background. In the f/16 image, they will be part of it. The image size you make will matter, as will the distance between subject and background. Try a head and shoulders pose and you will see what we mean.
Ask your subject which one they like better. We’ll bet it’s the f/4 shot.