Originally Posted by
dove
Even if you're using one set of sights for everything, you can still get "Multiple-Sight-Picture Confusion" when lighting changes. When I was running a TCAP and Operator Pro yellow rear, we did an experiment at the range. Our indoor range offers us a good amount of lighting control, so we set up various lighting situations that were quite dark, but allowed for enough ambient light to PID and work safely. Things that mimicked gas station lighting, etc. Then, we ran a few timed reps designed to mimic the shooting requirements of a civilian alley self-defense situation, i.e. draw on a timer, shoot a few shots, maybe mozambique, maybe two targets to engage, etc.
On many occasions I found myself really thrown off by unexpected sight pictures. I had previously come to think my wiz-bang Ameriglo combo was "hi-viz" in all situations, the ultimate carry sight, yada yada. Well, in most of those drills, I saw all black sights, and it really screwed me up bad. Even at times that I was sure pre-drill that the lighting allowed me to see the tritium, I'd draw and see black. The limited amount of "stress" and rushing of a timed staged scenario was enough to change my perception a bit, which was compounded by lighting conditions that my sights were suboptimal for.
Lesson learned: you need to go practice your sights in different lighting conditions, live fire. Also, for every sight there is some realistic lighting condition for which it sucks. Finally, I think there might be some value in spending some time running all black sights so your body knows what to do when it sees them. I was so wrapped up in finding a dot to drive (paint or tritium) that I got really messed up.