ProOptic Step-Down Adapter Ring 58mm Lens to 46mm Filter Size

What you're looking at is a Step-Down Adapter Ring, specifically designed for a 58mm lens to accommodate a 46mm filter size. This high-quality adapter ring enables photographers to utilize smaller filters on lenses that have a larger diameter thread. The first number, 58mm, represents the size that seamlessly screws into the lens, while the second number, 46mm, denotes the compatible filter size.

This step-down ring is an essential tool for photographers who want to expand their filter use without investing in multiple sizes. However, it's important to note that using "step-down" rings may cause vignetting, a common phenomenon where the image brightness or saturation decreases towards the periphery compared to the image center. This adapter ring is a practical, cost-effective solution for those looking to maximize their lens and filter compatibility.