Marumi DHG Super Lens Protect Filter 105mm

It makes sense to protect the glass of your most treasured lenses with a lens protection filter such as this. And it pays not to skimp: The light has to pass through the protective lens cleanly and without diffraction in order to create a quality image. Marumi protective filters tick all the relevant boxes: They possess excellent optical transparency, are treated to reduce internal reflections, and feature a thin frame to reduce vignetting.