C-PL Circular Polarizer Multicoated Multithreaded Filter 40.5mm - Slim

In this review of the C-PL Circular Polarizer Multicoated 40.5mm, the bottom line is simple: this compact filter is aimed at outdoor shooters using Olympus TG-5, TG-6 or TG-7 who want stronger color saturation and fewer reflections without bulk. The reviewer found the multicoated, heat treated glass and the rugged metal ring deliver clear polarization that is easy to see through the viewfinder or LCD, while the slim design keeps vignetting to a minimum on the small fixed lens cameras that this filter targets.

Key Features

• Circular polarizer: reduces unwanted reflections on water and glass, improving contrast and color saturation for landscape and travel shots.
• Multicoated glass: minimizes flare and ghosting so the effect is usable for both stills and video in bright conditions.
• Rugged metal ring: a black finish metal filter ring resists wear and handles repeated mounting and removal on a compact camera.
• Slim design: the low profile construction limits vignetting on compact fixed-lens cameras while still allowing rotation to adjust polarization.
• Multithreaded mounting: allows stacking of lenses or additional filters on top for more shooting flexibility.
• Filter factor roughly +1.3 stops: provides a practical light reduction to control exposure while delivering the polarization effect.

Who It's For

The C-PL 40.5mm is best for outdoor photographers and videographers using Olympus TG series rugged compact cameras who want an affordable way to cut reflections and boost color without altering white balance. Its slim profile and multithreaded design make it convenient for travel shooters who need to keep gear compact.

It is less relevant for users of larger interchangeable lens systems who require larger diameter filters or for those who need variable ND strength beyond the modest light reduction this polarizer provides. Studio photographers who do not contend with reflections will also find limited benefit.

Pros & Cons

Pros

• Effective removal of reflections from non-metallic surfaces for clearer photos of water and glass.
• Durable, heat treated multicoated glass in a rugged metal ring that stands up to field use.
• Slim, low profile design and multithreaded mount reduce vignetting and add stacking flexibility.

Cons

• The filter factor is modest (around +1.3 stops) so it does not replace a dedicated ND for long exposures.
• Limited to 40.5mm diameter, so users with other lens sizes must buy additional sizes.

Specifications

Our Verdict

The C-PL Multicoated 40.5mm is a sensible, value-oriented polarizer for owners of Olympus TG-5, TG-6 and TG-7 who need reliable polarization, low vignetting and durable construction in a compact package. It delivers clear color and reflection control for outdoor shooting and is good value for photographers who prioritize portability and durability over heavy light loss.

Frequently Asked Questions

Will this filter reduce reflections on water?
Yes. The circular polarizer removes reflections from non-metallic surfaces like water and glass when rotated into position.

Does the filter change color balance?
No. Circular polarizers do not affect the overall color balance of a shot; they mainly increase saturation and contrast.

Can I stack other filters on this?
Yes. The multithreaded design allows mounting additional lenses or filters on top for expanded use.