Step-down filter adapter ring B+W 62mm to 49mm model 1102867 (62→49)

The B+W step-down filter adapter ring 62→49 (model 1102867) allows photographers to attach 49 mm front-mount filters to lenses with a 62 mm filter thread. Made to provide a secure mechanical connection between different filter sizes, this adapter ring preserves front access to filters while avoiding the need to buy duplicate glass. It is designed for accurate thread alignment and stable engagement to minimize play and cross-threading during mounting.

Advantages

The adapter ring offers a compact and low-profile solution to adapt smaller 49 mm filters onto lenses with a 62 mm thread without altering the optical path. Its precise machining ensures reliable screw-in engagement and consistent centering of the filter. By enabling use of existing filters across different lenses, it reduces additional gear purchases and simplifies kit compatibility for field work and studio setups.

Suitable for

• Photographers who own 49 mm screw-in filters and have lenses with 62 mm threads
• Reducing vignetting when using smaller-diameter filters on wider lenses
• Quick adaptation in mixed-equipment kits to maintain consistent filter use

Key specifications

• Material: metal construction for durable thread engagement
• Mount type: step-down screw-in adapter (62 mm male → 49 mm female)
• Finish: machined surface to ensure smooth threading and alignment
• Profile: low-profile design to minimize added distance from lens front

How to use

To use the adapter ring, carefully screw the 62 mm side into the lens front thread until it seats snugly without cross-threading. Next, screw the 49 mm filter into the adapter until finger-tight. Inspect the assembly to ensure the filter sits flush and is centered. For removal, reverse the steps: unscrew the filter from the adapter and then unscrew the adapter from the lens.

Usage recommendations

Use the adapter on lenses where the smaller filter will not cause unacceptable vignetting; test at wider focal lengths to confirm image coverage. Avoid over-tightening metal threads to prevent galling; finger-tight plus a slight additional turn is sufficient. Keep threads clean and free of grit to maintain smooth engagement and protect filter coatings.