LEE Filters Wide Angle Adaptor Ring - 77mm

Its primary purpose is to allow the attachment of LEE 100mm filter holders to lenses with a 77mm filter thread, specifically designed to mitigate vignetting commonly encountered with wide-angle lenses.

It will securely screw onto any lens with a 77mm filter thread. However, its specific wide-angle design benefit (closer filter placement) is most pronounced with wide-angle lenses. For standard or telephoto lenses, a standard adaptor ring might suffice and be less bulky.

While it attaches to the LEE 100mm system, stacking multiple holders might still introduce vignetting on extremely wide lenses, even with this wide-angle adaptor. The design prioritizes bringing a single holder closer to the lens.

This adaptor ring is designed specifically for the LEE 100mm filter holder system. Compatibility with holders from other brands is not guaranteed.

Wipe it gently with a soft, dry cloth. Avoid liquids or abrasive materials to protect the aluminum threads.

Placing the filter closer to the lens element, especially with wide-angle lenses, reduces the chance that the edges of the filter (or its holder) will block light from reaching the sensor, preventing dark corners (vignetting) in your photos.

Yes, it is sturdily constructed with an aluminum screw thread for durability.

Ensure the adaptor ring is screwed on straight and fully seated on the lens. Check that the spring-loaded mechanism on the filter holder is clean and free of debris. Gently clean both the ring and the holder connection points.

Confirm you are using a compatible wide-angle lens and that the filter holder is correctly attached. Very extreme wide-angle lenses or the use of multiple stacked holders might still cause slight vignetting; consider using a thinner filter or a different lens combination if this is critical.

Verify that the lens filter thread is indeed 77mm and that there is no damage to the lens threads or the adaptor ring threads. Try screwing it on very slowly and carefully. If damage is suspected, do not force it and contact the lens manufacturer or filter provider.