Version: 1.0.0-beta6 (rev.: 1044916) (using 4.3.2 (KDE 4.3.2), 4.3.2-4.fc11 Fedora) Compiler: gcc OS: Linux (i686) release 2.6.30.9-90.fc11.i686.PAE Kipi convert images plugin produces 16 bpp png from 8 bpp bmp.
After updating image magick and libpng the plugin creates 8bpp png, so it was not digikam problem