Product Overview

The Pentax 645 58mm Circular Polarising Filter is built for shooters who spend more time outside than in front of a screen. Thread it onto your Pentax 645 glass and it immediately cuts harsh glare from water, glass and wet foliage, giving you richer colour and cleaner contrast straight out of camera. Blue skies deepen, clouds pop and distant haze clears, so your landscapes look the way they did when you were standing there.

With a slim, precision-machined frame, this CPL avoids vignetting on wide angles while still turning smoothly so you can dial in the exact amount of polarisation you need. Multi-layer coatings help resist oil, dust, scratches and moisture, making it a tough bit of kit that’s happy in Aussie sun, sea spray and red dirt. If you’re serious about getting the best out of your Pentax 645 system, this filter is a simple, lightweight upgrade that earns a permanent spot in the bag.

Key Features

• 58mm circular polarising design reduces reflections from non-metallic surfaces like water and glass, delivering clearer, higher-contrast outdoor images.
• Enhances colour saturation in skies, foliage and cityscapes so your photos look richer and more vibrant straight out of the camera.
• Ultra-slim aluminium frame helps prevent vignetting on wide-angle lenses while still allowing smooth rotation to fine-tune polarising effect.
• Double-sided, multi-layer coatings provide resistance to oil, dust, dirt, scratches and water, making the filter easier to clean and more reliable in the field.
• Most effective at roughly 90° to the sun, helping cut through atmospheric haze and improve detail in distant landscapes.
• Threaded circular mount fits compatible Pentax 645 lenses securely, ensuring quick installation and stable performance during shooting.
• Lightweight 15.1 g construction adds minimal bulk to your kit, preserving the balance and handling of your camera setup.
• Designed specifically for the Pentax 645 system, giving medium-format shooters a tailored solution for managing glare and contrast.