Yeah ,we're 1/2 hour of sunrise/ sunset. But I want the most for what I am going to get and if something should arise where I need it in darker situations, then I want it to have that ability. For exmpla a clear night with a full moon presents a great time to eliminate crop problems. If I chooses to do this (which I have the legal right and papers to do ) I want the scope to make it happen.
Besides that, it is like others have said, light transmission is what it is all about, the more coming through the better.