Shutter Speed.

The following images were taken with a relatively long shutter speed

Neon glass III By Sean Wareing Photography

Canon T1i Aperture f2.8, Exposure 4 secs.

Busy square by Sean Wareing Photography

Canon T1i, Aperture f20.0, Exposure 1/3 sec.

Fireworks By Sean Wareing Photography

Canon T1i Exposure 13sec, Aperture f6.3.

Urban celebrations By Sean Wareing photography

Canon T1i Exposure 3.2 sec, Aperture f 5.0.