Thanks, My mounting height will be 15' though. Since 15' is the low range should i move on to others? The seller contacted me back saying it with these specs at 15' it will produce 50 candle lights per foot.
What color are your walls and ceiling going to be? If a light color, this is an easier thing to figure out. If dark, then you will probably want to get out the slide rule.
My thinking is that there shouldn't be a need to go to the higher cost fixtures unless you really have the physical need. The high bay fixtures will have a narrower beam of light vs. normal fixtures, so they:
- will leave your walls darker, especially up high
- you'll need more of them to get an even spread of light at the floor (this may be irrelevant depending on how many you are buying)
- work best if you like doing your work at floor level on your hands and knees (your mounting height may be 15', but the distance from the mount to where your hands and eyes will be doing most of their work - hopefully - will be 10-12')
A lighter room gives you more room with the wider angle fixtures. The walls won't absorb that many lumens and they will just reflect most of what hits them back in to the room and on to the floor.