Lens Rear Cap Massa M39 — Massa Dekielek Na Tył Obiektywu M39 (SB1711)

Rear lens cap Massa M39 is a protective cover designed for photographic lenses with an M39 (39 mm) screw mount. The cap fits over the rear element and mount of compatible lenses to shield them from dust, dirt and mechanical damage during storage or transport. Its compact shape and screw-fit design provide a secure closure while remaining easy to attach and remove.

Advantages

The Massa rear cap for M39-mount lenses delivers straightforward protection without adding bulk. Its threaded design ensures firm attachment to M39 lenses, reducing the risk of accidental detachment. The cap is lightweight and compact, making it practical for use in camera bags or when storing individual lenses. It is manufactured to provide consistent fit and reliable protection for the rear element and mount threads.

Suitable for

• Photographers using M39 (39 mm) screw-mount lenses who need dust and scratch protection
• Collectors storing vintage or rangefinder lenses with M39 mount
• Travel and transport of M39 lenses to prevent mechanical damage

Key specifications

• Mount type: M39 (39 mm) screw-fit compatible
• Function: rear lens protection against dust, dirt and minor impacts
• Form factor: compact, lightweight screw-on cap
• Material: durable plastic (rigid construction for repeated use)
• Compatibility: lenses and adapters with M39 threaded rear

How to use

To fit the Massa rear cap, align the cap with the lens rear threads and gently rotate clockwise until the threads engage and the cap seats firmly against the mount. To remove, rotate counterclockwise until the cap disengages, then lift it away from the lens. Ensure the threads are clean and free of debris before attaching the cap to avoid scratching the mount. Store the cap on the lens when the lens is not mounted on a camera or adapter.

Usage recommendations

Regularly inspect the cap and the lens mount for dust or grit; clean with a soft brush or microfiber cloth before fitting. Do not overtighten the cap to avoid cross-threading. Use the cap alongside a front lens cap and a padded case for comprehensive protection during storage or transport.