Vantrue 40mm CPL Filter – Anti-Glare for E-Series, N4 Pro, N5 & S1 Pro

Cut Windscreen Glare on Your Vantrue. The 40mm CPL filter for the E-Series, N4 Pro, N5 and S1 Pro

Sun bouncing off the dash, plates bleaching out at the lights, and a windscreen that behaves like a mirror from mid-morning onward. That is polarised light, and no camera setting will remove it once the sensor has recorded it. A CPL filter blocks it optically at the lens. Rotate it once on install and the reflections drop out of the picture.

Trusted AU store: We're an authorised AU reseller, shipping from Melbourne within 24 hours^*. You get a 12-month warranty on this accessory, local technical support, and our 30-Day No-Worries returns.

Who This Isn't For: This is a 40mm filter for the front lens. Vantrue front-lens diameters vary across the range, so measure or check your model before ordering rather than going by the model name. If you drive mostly after dark, a CPL costs you light and is probably not worth fitting.

DCG Score & Highlights

What We Love

• Removes the dashboard reflection that software cannot recover afterwards
• Aluminium alloy frame with CNC texturing, so it actually grips when you rotate it
• Ultra-slim 5.5 mm rim that avoids vignetting the frame corners
• Multi-resistant coating against water, oil and fingerprints
• Deeper sky and road colour in harsh midday sun

What Could Be Better

• A CPL reduces light reaching the sensor, so it is worth removing for a stretch of night driving.
• Front-lens sizes vary across the Vantrue range, so confirm yours is 40mm before ordering.
• It needs rotating correctly on install, or you get very little benefit from it.

Why a CPL Filter Matters for Daytime Plate Capture

Most disappointing daytime footage is a glare problem rather than a resolution one. Light reflecting off your dashboard and the inside of the windscreen is polarised, and once it lands on the sensor it is permanently part of the image. A polarising filter removes it before that happens, which is why fitting one often does more for plate readability than moving up a camera model.

Top Benefits

• Readable plates at midday: Cuts the reflected glare that washes out number plates in full sun.
• No dashboard mirror: Stops your own dash appearing over the road ahead.
• Better colour and contrast: Sky, road surfaces and vehicle paint record with more depth.
• Clearer on wet roads: Reduces the sheen that hides detail after rain.
• Lens protection: Takes the stone chips and cleaning marks instead of your camera.

Upgrade Your Daytime Clarity Today

Add the Vantrue 40mm CPL filter to your cart for sharper daytime footage through an Australian windscreen. Compare the range in our CPL filters collection, or browse the cameras in Vantrue dash cams. Ships from Melbourne within 24 hours^*, covered by our 30-Day No-Worries returns.

Last updated: August 2026