- Electronic analog exposure display
- Exposure compensation
- Bracketing progress indicator
- PC mode indicator ...
The density versus log exposure (D-Log E) curves are presented in Fig 1. The compensating action of the two-bath developer is clearly shown in the curves. For the development times of 3-5 min, the curves overlap at and below Zone III.
The log exposure can be calculated easily as follows: E ´ T = H 80,000 (lux) ´ 1/100 (set) = 800 lux seconds The log exposure = the log of 800 or 2.90 When you convert exposure to logarithmic form, both density and exposure are on the same scale.
Let us consider the consequences of the minimum in the density-vs-log exposure curve. The borders between zones of different density in a photograph are never perfectly sharp. Shadow edges are fuzzy because of the finite size of the light source.
A characteristic curve is a graph of density vs. log exposure for a particular film/developer combination. What this means in English is that a characteristic curve gives you an idea of how a film reacts to a given exposure and a given developer.
 See also: Exposure, Photograph, Back, Photography, Log e
  
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