convert.exe from the installation of
ImageMagick-6.6.3-3-Q16-windows-x64-dll.exe gives this error:
The program can't start because CORE_RL_wand_.dll is missing from your computer. Try reinstalling the program to fix this problem.
The packagers have forgotten this DLL. The solution is to install the statically linked
ImageMagick-6.6.3-4-Q16-windows-x64-static.exe or try a x64-dll.exe installer of an older version.