The market would put these right in between slc and el. However depending on what you prefer in a binocular they might be better than an el. They are very bright and sharp. I’m mage is pretty comparable to SLC because neither is a flat field like the EL. The SFL are way better at controlling glare than either swaro. They also have the smoothest (and fast) focuser I have ever felt. They also have a wider field of view but not as wide as the NL.