KANI 807861 52-49mm Filter Diameter Conversion Adapter Step Down Ring Thin Frame with Knurling Filter Accessories Aluminum

KANI Step Down Ring 52-49mm Filter diameter conversion adapter that allows you to attach a filter with a diameter of 1.9 inches (52 mm) to a lens sideframe diameter of 1.9 inches (49 mm). The ultra-thin design reduces vignetting in a step-down ring that is prone to structural vignetting The filter to be attached is inside than the outer circumference of the lens, so vignetting may occur at a wide angle.

• The lens side can be installed with a filter diameter smaller than the frame diameter
• A size adapter with knurling around the perimeter for easy on/off and operation
• Product Name: 2.0 - 1.9 inches (52 - 49 mm) step down ring (Model Number: K19188)
• External Dimensions: φ2.2 inches (56 mm), Frame Thickness: 0.04 inch (1 mm) / Unit Weight: Approx. 0.1 oz (
• Lens Side Frame Diameter: 2.0 inches (52 mm) / Filter Side Frame Diameter: 1.9 inches (49 mm)