For creating beautiful images with high-quality bokeh, you’ll want lenses that have low f-stops. For maximum bokeh, you want lenses that have the ability to stop to 1.2 or 1.4. Longer focal lengths — whether in zoom or prime lenses — can help you to maximise bokeh. If more bokeh is your aim, consider a lens focal length of 70 mm and higher.
How shutter speed, aperture and positioning affect bokeh.
For your experimentation, start with a well-lit, static object, like a bowl of fruit and take trial shots to help you to figure out how to create the bokeh you want to see:
Shutter speed: Shutter speed determines how long the shutter on your camera remains open to allow light to hit the film in your camera or its digital sensor. It’s measured in seconds, so a fast shutter speed might be 1/1,000 of a second versus a slow speed of a second. As you open up the aperture of your camera, you can increase the shutter speed to get crisper images. Experiment with f-stops in relation to shutter speed to see how your bokeh shifts and changes.
Aperture: The main mover and shaker for bokeh is going to be the depth of field you create with your aperture settings. Experiment with those f-stops and see what you come up with.