I need to composite a soft light layer on top of a base image using 50% opacity. The following works, but is there a faster or more efficient way to achieve the same thing?

magick base.tif -alpha Off -compose SoftLight softlight.tif -composite fullSoftLightComp.tif
magick base.tif fullSoftLightComp.tif -compose dissolve -define compose:args=50,100 -composite compHalfLight.tif