Thanks, that's an excellent idea to keep it turned up. That issue you bring up is also another good reason to have cowitnessing iron sights on a carry gun, and to practice using them...in case of a washed out dot. In direct outdoor sun, I have no problem seeing an RDS turned way up, but in the case of an EDC pistol mounted RDS it seems less likely to be at the ideal brightness level at any given time for any given lighting scenario.