Berlin, Potsdamer Platz. Panorama from 12 single photos, original size ca. 16000x6000 pixel
Serves for creating luminance masks, color masks, saturation masks, edge masks and contrast masks and for some nicely effects.
Decrease or remove the existing transparency of an image or - in opposition - transform selected colors or the lightness of the pixels into transparency, and much more.
This "different" channel mixer is not only useful if your imaging software is missing a channel mixer, but tops the channel mixers of some professional imaging programs too.
The GrayMixer converts color images into amazing gray tone images.
SF Color Space Converter
For converting a RGB image into HSL or HSB or other color space and vice versa (for experimental purposes).
(only in german) Was haben Farbmanagement und Musik gemeinsam? Verstehen Sie anhand der zahlreichen Analogien, was Farbmanagement ist und was sich hinter Begriffen wie "Rendering Intends" verbirgt. Zudem finden Sie hier konkrete Erläuterungen zu den Einstellungen in Soft- und Hardware.
A decent display and its optimal set-up belong to the basic conditions of correct image processing. Here you can find test images and tutorials.
A special Color Space Test Image serves for displaying 2D-views of all available output ICC profiles in Photoshop. (Tutorial only in german)
Verify and compare the sharpness and resolution of your camera and lenses, determine dynamic range and shooting characteristics of your digital camera.
Test images for verifying gradation, color, resolution and profil quality of desktop printers.
Some tools for measuring changes in gradation serves for understanding and comparing the most global imaging functions that influence tonal values and contrast.
"Contrast curves" for measuring shifts in contrast along the edges of an images serves for understanding and comparing sharpness and blur functions of imaging software.
Blending Modes of Photoshop, Paint Shop Pro and other digital imaging programs with short explanations and the math behind.