How to Get Blurry Backgrounds (Depth of Field)
DefinitionThe distance between the nearest and farthest objects that are in sharp focus.
1The Simple Explanation
Shallow depth of field means only your subject is sharp, and the background is creamy blur (Bokeh). Deep depth of field means mountains in the back are just as sharp as the flower in the front.
2Technical Deep Dive
Controlled by three factors: Aperture (f-stop), Focal Length (zoom), and Distance to Subject. Wide aperture + Long zoom + Close subject = Maximum blur.
Common Misconceptions
Myth: Only expensive cameras can do this. Fact: Even your phone does it (often with software), but getting close to your subject helps any camera.