Redrock Micro Universal Lens Donut for MatteBox

The Redrock Micro Universal Lens Donut is the perfect accessory that enables fast lens changes and eliminates light leaks for your microMatteBox. An alternative to the traditional pre-cut donuts that only supported specific lens fronts, the Universal Donut is made of flexible light-proof cloth and a flexible drawstring, so it easily wraps around lenses of any diameter up to 142mm.

The added cloth also functions as a bellows, so zoom lenses that change length can also be used in a mattebox while still preventing light leaks. The Universal Lens Donut is great for any configuration where constant lens changes of different diameters are required. It is also ideal for use with still photography zoom lenses that may have external barrel movement during zooms. The drawstring will keep the cloth tight around the lens even as the front element moves in and out.