Tone values
Is various shades of gray between the extremes of black & white in a photographic image.
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Tone values - various shades of gray between the extremes of black & white in a photographic image.
Toning - method of soaking the print in selenium or similar chemical(s) to help give the print an overall feeling of "richness".
The KODAK Gray Scale lets you see if you are capturing all of the possible tone values and making full use of the camera's dynamic range. The scale has 20 steps in 0.10 density increments between 0.0 white and a practical printing black of 1.
The horizontal axis represents the original tone values (input values), with black on the left and progressively lighter values toward the right.
You can easily target a subject tone, taking readings of a key highlight, key shadow value, or midtone value.
Continuous tone ( CT ) device
A device that renders images by using tone values of different densities without applying halftone dots.
A system developed by Ansel Adams that considers subject brightness and negative exposure which, when combined with developing and printing gives you total control over the final prints tone values.
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as clarity of the photographic image in terms of focus and contrast. Largely subjective but can be measured to some extent by assessing adjacency effects, i.e. the abruptness of the change in density between adjoining areas of different tone value.
I simply felt that the artist could do distortion better than the photographer because he had this plasticity which could control the nuances. When he wanted to change something in the tone values, he could paint over it.
CONTINUOUS TONE-Photographs in which the detail and tone values of the subject are reproduced by an infinite gradation of gray densities between white and black.
 See also: Tone, Value, Photograph, Exposure, Print
  
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