Adapter ring Massa 42mm to 52mm SB3802 — step-up filter adapter

The Massa step-up adapter ring 42mm to 52mm (model SB3802) allows mounting 52mm filters, lens caps or accessories onto lenses with a 42mm filter thread. Made to bridge the difference between a smaller lens thread and a larger filter size, this adapter enables photographers to use a single set of 52mm filters across lenses with 42mm threads without changing the lens or the filter itself. The adapter's metal construction and precision machining maintain secure fit and concentric alignment so that image framing and filter performance are not affected.

Advantages

The metal step-up adapter provides a solid, durable connection between the lens and 52mm accessories while keeping weight low. Its precision threads ensure smooth attachment and removal with minimal play, reducing the risk of vignetting or misalignment. By using this single adapter, photographers can save on the cost and storage of duplicate filter sets and quickly switch filters between compatible lenses. The simple, low-profile design does not add optical elements or change focal length.

Suitable for

• Attaching 52mm screw-on filters (UV, ND, polarizer) to lenses with 42mm threads
• Using 52mm lens caps or protective accessories on 42mm lenses
• Standard photography workflows where multiple lenses share a single filter size
• Travel and field use when minimizing kit weight and redundancy

Key specifications

• From thread: 42mm (female side mounts to lens)
• To thread: 52mm (male side accepts 52mm screw-on filters and accessories)
• Material: metal construction for durability and stable fit
• Finish: matte black to minimize reflections
• Type: step-up adapter ring (non-optical, mechanical accessory)
• Compatibility: designed for standard 42mm and 52mm screw threads

How to use

Align the adapter's 42mm side with the lens's filter thread and gently screw it clockwise until hand-tight; avoid cross-threading by starting straight and turning slowly. Once the adapter is securely seated, attach a 52mm filter or accessory by screwing it onto the adapter's 52mm thread. To remove, unscrew the filter first and then the adapter from the lens. No special tools are required; tightened by hand is sufficient for stable use in normal shooting conditions.

Usage recommendations

Ensure threads are clean and free of grit before mounting to prevent thread damage. For best results, hand-tighten only—do not over-torque. Check for vignetting when using wide-angle lenses and stacked filters, and remove the adapter if any optical interference is observed.