SmallRig CO-F1 6733 Clip-On CPL Filter for iPhone 18 Pro / 18 Pro Max

The SmallRig CO-F1 6733 clip-on CPL filter attaches to an iPhone 18 Pro or 18 Pro Max in seconds and needs no extra mounting base. It cuts reflections off water, glass and metal, and a one-handed twist fine-tunes the polarization as you shoot.

The SmallRig CO-F1 6733 clip-on filter is a circular polarizer for the iPhone 18 Pro and iPhone 18 Pro Max. A flexible silicone clip holds it in place without an extra mounting base — it goes on in seconds and works with most phone cases that leave a large enough cutout around the lens backplate.

Snap-On Pro Brightness Control

ND2-ND32 stepless adjustment

Cinematic Motion Blur in Broad Daylight

CPL

Cut Glare to Reveal Hidden Details

Streamlined Adjustment with a Simple Twist

Silicone Snap-On Mount

Silky Waterfall

Smooth, flowing water

Dreamy Skies

Soft, balanced cloud motion

Night Lights

Dynamic light trails at dusk

The polarizing glass cuts reflections off water, glass and metal surfaces, so detail that would otherwise disappear under glare comes through: fish below the surface, goods behind a shop window, the texture of paintwork. You change the strength by turning the front ring, one-handed and while recording, so glare and contrast can be dialled in without stopping the take. At 50 mm across and just under 13 grams it can stay on for everyday carry, and the dual-layer build keeps MagSafe access clear. Check the shape and size of your case cutout before buying.