I may not be understanding what you're telling me. I did see some of those posts prior. I don't think they are the same. In a way, this post is the most similar... <a href="https://app.roll20.net/forum/post/1242343/dynamic-lighting-integrated-with-fog-of-war-warcraft-2-style/?pagenum=1" rel="nofollow">https://app.roll20.net/forum/post/1242343/dynamic-lighting-integrated-with-fog-of-war-warcraft-2-style/?pagenum=1</a> but again its FoW, and I'm dealing with FoV. So, unless I'm missing what you're saying, I think its different. The mechanic very similar. For the examples below Field of View (FoV) is synonymous with the Has Sight setting. Here are some visual examples to help. My dwarf has darkvision, indicated by the yellow arrows. I used sheds light 60', 140 degrees, all dim. His FoV is also 140 degrees, matching his darkvision, but in this example that is disabled (i.e. set for 360). Notice the red arrows. This is dynamic lightning, and these are true blind spots. The walls prohibit my dwarf from seeing anything in the area even though the room is 100% lit with a bonfire. Now I move into the room. The room is 100% illuminated from the fire. In theory this is what is "illuminated" to my dwarf. (I ignore the pillars) BUT... technically, while illuminated, not everything is in my FoV. That orc to my left is out of my FoV. My dwarf needs a passive perception, otherwise he might get a surprise attack. Unfortunately, if I turn on FoV, this is what happens... That (to me) looks wrong. The yellow lines point to what should be dimly illuminated. It is out of my FoV but not dark. This is a poor Photoshop rendition, but you get the point. It should resemble this.