With step Up rings can be used on any type of lens (52mm to 72mm)
Total current drain ~ 1.2Ah at 5-6V, (4xAA battery or rechargeable or 6V DC adapter)
Very lightweight: 76gr, battery holder with 4x AA inside 152gr
The circuit is designed to have two phases of light, full or half.
Ideal for super macro photography.
SCH and PCB you can download here: macro led ring
Home page: APCC DIY