I created an image file and saved it as .tif
But the image conversion process is not sharp, the resulting lines
are not straight, or did I set something wrong?
I had the best results when using ridiculously high source resolutions (something like 8k pixels wide or more) and setting the threshold to 0. But yes, it is quite annoying that I have to export a vector file as a pixel file, just to convert it back to a vector.