I am making clay stamps. When I bring in my image and create a model the hills and valleys it creates are too severe. how do I make it so the top surface of the model is more flattened?
What utility are you using to do the conversion??
Whatever you're using, it looks as if you need to tune the settings of the conversion process...….not try and bodge bad results in S3D. There should be settings to adjust the range of depth...the add-in in S3D has settings, but without actually trying the tool out, I'm not sure what all of the setting actually do.
You may need to adjust the contrast settings of the source image so that the converter works better....