INTRODUCTION
Zones are levels of light and dark.
A Zone System is a system by which you understand and control every level of light
and dark to your best advantage.

                                                                            The easy way (intuitive)

The hard way

Geeky detail – The hard way
The Zone System
Nick Miner’s Zone Scale
nickminers.com/2009/05/the-zone-system

Zone system film speed test
http://www.jerryo.com/formula/z_speedtest.html

Zone Scales
http://en.wikipedia.org/wiki/Zone_System
Another Zone Scale
BEYOND The zone System
http://www.russellcottrell.com/photo/BTDZS/zone2.htm