PhotoLine Tip 31: b/w-raster, newspaper raster
 
1. You have a color picture like this

2. You want to print the image with a laser printer or any ohter printer in black and white. Or you want to create a special effect with a black and whit image.
PL32 offers many raster types to convert a color image to black and white.
Rasters are small rectangles, here a black points which correspont to the color (intensity) of the color image by the size of the points or the amount of points.
You can setup the raster at Tool/Image/Convert Picture.

3. Here are some examples for rasters in PL32

  
Bayer Dither                                   Coarse Fatting                                Vertikal Line 
 
 

   
Fine Fatting                                     Ordered Dither                               Dither 45 Grad 

 
Floyd Steinberg 

4. Be aware that rastered images should normally not be scaled when you print them. To avoid this, first setup the resolution of your printer at Layer/Layer Info. Then scale the image to the size you want at Tool/Image/Scale Picture. Here you can setup the size of the image in mm.

 
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Please email questions and suggestions on these tips to Gerhard Huber.