I set my iphone 29Ē from my right rear turn signal mounted in a vice with the back or camera side inline in height and straight back from the bulb, lens was still installed. I didnít move anything between testing, all I did was reset measurements by touching the screen. Didnít want to change any parameters between changing out flashers. Visually the bulb is brighter and seemed to fill out the entire reflector, looked less like a flashing filament.
Room lux was 06 in my dark garage with tail light covered.
Peak or max LUX was 27 when flashing with the analog flasher. Average plateaued about 21 lux.
Peak or max lux was 143 when flashing with the digital flasher. Average plateaued about 118 lux.
At 5.29 times the output, If Iím understanding lux correctly, that should appear a little more than twice as bright to the human eye all other things being equal. Iím sure someone with more experience will be along to help explain it, or tell me how messed up my thinking is 🙃.