Threaded Lens Step-Up Adapter Massa 49mm to 52mm SB2241

The Massa Threaded Lens Step-Up Adapter 49mm to 52mm (model SB2241) is a metal ring designed to allow lenses with a 49mm filter thread to accept 52mm filters and accessories. It provides a secure, threaded connection that preserves alignment and mechanical stability when attaching larger filters, hoods or auxiliary converters. The adapter maintains a low profile to minimise vignetting while enabling the use of a wider range of photographic accessories without modifying the lens itself.

Advantages

The adapter’s metal construction ensures durable, precise threads that resist wear from repeated mounting and removal. It enables photographers to standardise on one filter size for multiple lenses, reducing the number of separate filters required. The step-up design prevents the need to force incompatible parts together and preserves the lens’s front element clearance, supporting reliable operation in the field.

Suitable for

• Attaching 52mm screw-on UV, polarising or ND filters to lenses with a 49mm thread
• Using 52mm lens hoods, close-up lenses or converters on 49mm lenses
• Standardising filter sets across different lenses to reduce equipment bulk
• Situations requiring a robust metal adapter for frequent filter changes

Key specifications

• Material: metal construction for durability and precise threading
• Thread conversion: 49mm (lens side) to 52mm (accessory side)
• Mount type: external screw-on adapter with matched male/female threads
• Profile: low-profile design to minimise risk of vignetting on wide-angle lenses
• Finish: matte finish to reduce reflections

How to use

Screw the adapter onto the lens front by engaging the 49mm thread and turning gently clockwise until finger-tight; avoid over-tightening to prevent thread damage. Once attached, screw the 52mm filter or accessory onto the adapter’s outer thread until secure. Confirm that the filter is aligned and that there is no contact with the front element. To remove, hold the lens steady and turn the adapter counterclockwise; then unscrew the attached accessory from the adapter if required.

Usage recommendations

For best results, clean threads on both the lens and adapter before mounting to prevent cross-threading. Use the adapter when you want to use larger filters without changing lenses; avoid stacking multiple thick filters if your lens is wide-angle to prevent vignetting.