B+W 23335 NL4 Close-Up Lens +4 Diopter

The B+W NL4 Close-Up Lens is a screw-in filter that reduces your lens's minimum focusing distance, enabling you to capture detailed close-up images without investing in a dedicated macro lens. With a +4 diopter rating and a 37mm thread size, it's designed for smaller lenses and delivers noticeable magnification for subjects like flowers, insects, jewelry, and product photography. B+W manufactures the filter using high-quality optical glass and applies rigorously tested coatings to preserve sharpness and minimize flare or ghosting.

As a single-element design, the NL4 keeps weight and bulk to a minimum—simply screw it onto the front of a compatible lens, and you're ready to shoot. This makes it especially appealing for photographers who want macro capability on the go without adding significant gear to their bag. While a dual-element achromatic close-up lens would offer even sharper edge-to-edge performance, the B+W NL4 strikes a practical balance between optical quality, portability, and cost for photographers exploring close-up work.