Specifications
The Digital Fine Print Course
Refining a Fine Print
Lobster - Totally Independent Tone and Colour Correction
On closer inspection via the Info Palette, Photoshop’s Luminosity
and Color Blending Modes do not restrict editing changes solely to
the luminosity or colour of the image. Even when points are
‘locked down’ on a Luminosity blended Photoshop RGB curve their
colour is still modified when adjacent points are edited. For criti-
cal image editing this is a problem where local edits effect other
areas of an image that then have to be corrected, ad nauseam.
In Photoshop it is difficult to easily and accurately edit the tone of an image independ-
ently of its colour. That is unless you are working in LAB, or employ a third party script
called Lobster from http://www.freegamma.com.
Lobster opens an image in Photoshop as a Luminosity Layer and a Chromaticity Set com-
prising three separate RGB chromaticity (hue and saturation) layers. Individual adjust-
ment layers can then be added as required to each layer for complete control over any
aspect of an image’s colour and luminosity.
Copyright Les Walkling 2012
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All Adjustment Layers, especially Curves and Levels, will
now function with unequalled image editing precision, and
Lobster also corrects Photoshop’s Info Palette read outs.