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SF GrayMixer Pro by Ralph Altmann
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SF GrayMixer Pro

By Ralph Altmann
Plugin for:
Photoshop Plugin available for Windows 
Ease of use

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Professional grayscale conversion for RGB, Lab and CMYK images also in 16 bit per channel. Features:
  • Conversion by luminance By standard, the weightings of the RGB colors flowing into the grayscale image are set to what I call "luminance mode". This conversion scheme, originally developed for television, corresponds very well to the way we perceive color brightness. Red flows into the brightness of the grayscale image by 30%, green by 59% and blue by 11%.
  • auto balance Changing a slider will automatically re-adjust the output channel's other two sliders so that the sum of all three remains 100%. In order for this to work, the "lock" settings for all three sliders have to be unchecked.
  • lock option The auto balance feature can be locked for each single slider ("lock" checkbox checked). If all three sliders are locked, like in the figure above for the red output channel, then their behavior is similar to Photoshop's.
  • overflow warning If the sum of a triple of sliders differs from 100% this is displayed as an overflow (positive or negative). Such differences can occur if one or more sliders are locked or if one of the unlocked sliders is already at its limit.
  • fixing colors (Pro version only) Clicking with the right mouse button into the preview window fixes the current gray interpretation of the selected color. All following changes will not affect the fixed color.
  • clipping warning If this option is enabled image regions with tonal values of 0 (black) or 255 (white) will be displayed as red. This allows for good visual evaluation of the current settings' effects on highlights and shadows of the image.
  • brightness slider This additional slider modifies the overall brightness of the image. It changes the image's gamma value and therefore mainly the mid-tones, leaving black and white points untouched.
  • bilingual A mouse click changes the language between german and english. more features:
  • changeable window size
  • Lab and CMYK support
  • support for 16 bit
  • all settings loadable/savable

 Other plugins from Ralph Altmann 
 For Photoshop: SF Color Space Converter, SF ColorMixer Pro, SF Maskerade, SF TransluSense
 Suggested links 
 About : Adobe PhotoShop for Textile design, Adobe Photoshop tutorials and tips, Digital media training series, Grafnet, Inside Graphics, Photoshop tutorials by SketchPad,, PhotoshopContest, PhotoshopSupport, The Photoshop Guru's Handbook, Tutorial Outpost

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All trademarks are property of their legal owner.
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