On 27/09/2007, Charlotte Webb charlottethewebb@gmail.com wrote:
Spectators can be blurred beyond recognition. I've done this a few times. If you are good with photoshop or something similar you can usually make bystanders and well-wishers look "incidentally out of focus" rather than "deliberately anonymized".
—C.W.
When using a good camera, the bigger the aperture (the smaller the f-number) the smaller the depth of focus. This also increases the amount of light hitting the film, meaning you can speed up the shutter speed.