The emphasis for version 3.9 of Kaleider has been improvements in the areas of image quality and resolution, thus making it an even more useful graphics tool for people who work with large images and require fineness of detail.  Here is a synopsis of Kaleider 3.9 enhancements:

• The Improved Quality option uses a 'pixel blending' technique when rendering effects, instead of the simpler method of just rounding to the nearest pixel.  There is a fundamental problem with manipulating digital images.  Even though effect calculations are carried out to many decimal places, eventually the results must be applied to individual pixels; essentially converting rational numbers to integer values.  Pixel blending is a way of reducing the pixelation caused by this conversion, and tends to produce smoother, less jagged edges.

  Pixel blending causes the shifting of effects to be somewhat slower.  If you have a fairly fast computer you probably won't notice much difference, and will likely prefer to keep this option always on.  People with older, slower PCs can toggle Improved Quality on/off as desired, for example turning it off during shifting or wandering activity, and then on before saving a final image.

• The Full-Scale Window is mostly useful when working with a large source image (larger than the screen size).  It provides the ability to reproduce effects that were performed on a down-scaled source image in the main Kaleider window, but at the resolution and quality of the original source image.  Thus, in the main Kaleider screen you can conveniently and efficiently render effects, manipulate and shift tiles on an image scaled down to fit within the screen.  Then, when a pleasing picture develops, use the Full-Scale Window to re-render and display the effect at the scale of the original source image.  The position, size and other parameters of the effect are adjusted up to match the source image dimensions.  The Full-Scale Window display can be scrolled horizontally and vertically to bring different portions of the image into view.
  

• The Save With Special Options screen provides additional choices for saving images at customized sizes, including the ability to save tiled images at any specified Width and Height.  When working with a large source image, various options are available for saving Full-Scale images and tiles.
  

• The Center option keeps rendered patterns automatically centered within the screen to maximize symmetries (similar to Mandalas, but not within a circle).

• A Mandala Color can now be specified for the background circle that encloses Mandala designs.  This can be particularly useful when you plan to print a Mandala image.  The Mandala Color can be set to white to avoid wasting excessive black ink on printing the background.

• New Roaming variations have been included in the Room Options screen.  Any combination of Observer Motion, Bubbles Motion and Bubbles Spin can be chosen to control the nature of Roaming action.  Also, the Automatic Effects Configuration screen now contains a Random Motion Choice option to vary the style of Roaming movements during Automatic Effects.  A Bubbles Density parameter provides some control over the relative occurrence of Bubbles within Rooms.