lusidghost
Well-Known Member
That's how I do it. I still use one of these crappy ass things and make an estimate based off of my already established lights.The apps are pretty helpful when switching between lights, t5s to led/hid etc. Even if not totally accurate, you can get a ballpark figure of lux at your canopy with one light, then know if you need to raise or lower the new light. They don't need to be accurate, just consistent to be useful in certain instances, or for newbies.