Ive been using the tent buddy app for a while to get a rough dial... I doubt its super accurate, but it also comes with a vpd calculator and it's good for getting it in the ballpark.Wise words from @WildBill - these lights need dialling in. With great power comes great responsibility. I used the cheap par hack from migro which really worked well with my 150 diablo but until i did i had a few issues that i thought were nutes etc. Congrats to those who are testing, i'm gonna pop on my shades and watch with interest.
Amazon product ASIN B07NVDC6CR