dick
All six batteries required for the ring light to work at all. They must be in series. Four battery slots worked OK. One slot took a screwdriver to force an AmazonBasic AA, or Ni-MH, or Duracel, AA battery in place. The sixth slot took a hammer to force it in place. Bad plastic moulding probably. The lens adapters worked ok but I bought Neewer step up step down set to adapt to a sony video camera. Plenty of light. It does have + and - buttons to change the light level which is pretty intense. No option for changing color balance from 5600K. After several hammer insertions and removals of the troublesome batteries, they became less troublesome. But for the battery issue it would have earned 4 stars.