Ok I have seen a few threads here and I am still royally confused.
Playing with an optic at the mo and my Light meter just faffing around with my LED on my Android phone.
I'd like to 1st work back a distance calculation i.e. Lux to Lux @ distance but I'd like to understand how that translates to candlepower also.
So to start... I get my phone Led to just hit max limit on the meter at 400KLux @ 4 meters distance so...
how do I convert that to Lux @ 1 Meter does beam width have to be factored in :thinking:
If it helps diameter of beam @ 4 Meters is roughly 7 inch / 17-18cm
Thx in advance
/Paul.
//edit ** Before somebody picks up on it ... yes meter was on wrong setting but what I am after understanding knowing remains the same.
Playing with an optic at the mo and my Light meter just faffing around with my LED on my Android phone.
I'd like to 1st work back a distance calculation i.e. Lux to Lux @ distance but I'd like to understand how that translates to candlepower also.
So to start... I get my phone Led to just hit max limit on the meter at 400KLux @ 4 meters distance so...
how do I convert that to Lux @ 1 Meter does beam width have to be factored in :thinking:
If it helps diameter of beam @ 4 Meters is roughly 7 inch / 17-18cm
Thx in advance
/Paul.
//edit ** Before somebody picks up on it ... yes meter was on wrong setting but what I am after understanding knowing remains the same.
