Professional grayscale conversion for RGB, Lab and CMYK images also in 16 bit per channel.
- 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.
A mouse click changes the language between german and english.
- changeable window size
- Lab and CMYK support
- support for 16 bit
- all settings loadable/savable