Easy to assemble and even easier to use: just put the meter reading for zone V on the zone you prefer, then read where the other zones fall. There are three wheels to play with, so f-stops and EVs too are easy to remember.
The wheel in PDF format.-- 224KB--

Filterzone is a photographic filter Database, which is a complete catalogue with all the filters used in photography.

Paperzone is a Black and White photographic printing paper Database, which will help you to get acquainted with the technical characteristics as:
the layer structure, density curves, spectral sensitivity, exposure and contrast control, printing range, darkroom safelights, processing times and print finishing ..........

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The colour temperature in the Kelvin scale is the handiest way to express the content of the colour of a light source.People that have been occupied with photography, even for a short period of time, must have encountered references to this term. However, there is often a confusion with .......