Use the 1-Stage Clamp-On 138mm Round Zip Box (90-95mm) from Wooden Camera to attach one filter to the front of your lens. The Zip Box clamps onto lenses with an external front diameter of up to 3.5-3.7". No need to worry about sandwiching a diopter into a standard matte box tray, this round sunshade/filter holder's tray-less design will fit a diopter of any thickness.

The Zip Box's lightweight yet strong design features a unibody rubber shade with stainless steel components. The sunshade's wide design prevents vignetting even when using wide lenses and large camera sensors..

• Clamp-On Sunshade/Filter Holder
• For (90-95mm) Outer-Diameter Lenses
• Holds One 138mm Round Filter
• Wide Shade Prevents Vignetting
• Durable Rubber & Stainless Steel Design