Macro Close-Up Lens Filter +4 Massa for 40.5 mm threads, diopter +4

The Massa Macro Close-Up Lens Filter +4 for 40.5 mm threads is a screw-on diopter that decreases the minimum focusing distance of compatible lenses to enable close-up and macro photography without the need to change optics. Designed for lenses with a 40.5 mm filter thread, this +4 diopter is intended for compact system cameras and interchangeable lenses that accept 40.5 mm filters. It provides an economical and convenient way to capture small subjects such as flowers, insects and fine product details by effectively increasing the lens’s magnification at short working distances.

Advantages

This close-up lens is simple to attach and remove, offering portability and quick conversion from standard shooting to macro-capable imaging. The screw-on design preserves lens balance and autofocus compatibility on many modern lenses while providing increased magnification for close-up subjects. The optical element is optimized for short-distance use, reducing the need for specialized macro lenses when shooting small objects or detail work.

Suitable for

• Close-up photography of flowers and plants
• Insect and small animal detail shots
• Product and jewellery detail images
• Macro studies and hobbyist macro projects
• Quick field use when carrying a dedicated macro lens is impractical

Key specifications

• Optical power: +4 diopters (adds approximately 4 diopter strength)
• Filter thread size: 40.5 mm screw mount
• Mount type: front screwing filter compatible with lenses that accept 40.5 mm filters
• Primary use: reduces minimum focusing distance for increased close-up magnification
• Compatibility: designed for compact system and interchangeable lenses with 40.5 mm filter threads

How to use

Screw the Massa +4 close-up lens filter onto the front filter thread of a lens with a 40.5 mm thread until it is hand-tight. Compose the image and move the camera to achieve the desired framing; because the diopter reduces the focusing distance, expect to work at shorter subject distances than with the bare lens. Use manual or autofocus depending on lens and camera behaviour; in many cases manual focus and small adjustments of camera-to-subject distance yield the most precise results. For best results, use a tripod or stable support, adequate lighting, and consider using a small aperture to increase depth of field.

Usage recommendations

When using the Massa +4 diopter, maintain sufficient working distance to avoid casting shadows on the subject. Combine with diffused light or a ring/close-up flash to improve illumination. Avoid stacking multiple close-up lenses unless specifically required, as that can increase optical aberrations and reduce image quality. If maximum sharpness is required, stop down the lens gradually and check results at intended focus distances.