Digital camera rule of thumb for buyers – Pay for sensor size, not pixel count. On today's cameras you'll have more than enough megapixels; better quality comes from larger sensors…and better glass if it's a dSLR you're after. Speaking of which: pay for decent glass, not shutters. In professional cameras, great lenses endure, while the camera bodies change and become obsolete just as computers do, usually on Moore's 18-month rule timescale.
Imaging, photography, photos, tips and tricks and a little science sauce