Irix Edge IFH-100-PRO

£145/$190 https://irixlens.com

Irix’s Edge IFH-100-PRO is designed to be as thin as possible to reduce vignetting with ultra-wide lenses and has slots for two square filters and comes with a drop-in circular polarizer.

It uses the latest generation of tempered optical glass, has advanced anti-reflective coatings and has a nano coating that repels dirt and makes it easy to clean.

You need to rotate a polarizing filter for optimum results, and this can be fiddly when mounted in a square filter holder – but a knurled external dial makes this easier.

The holder has spacers to adjust the filter slots for regular 2mm filters or ultra-thin 1.1mm thick filters, which could be important with ultra-wide angle shots.

Screw-in adapter rings with diameters of 52mm to 95mm cover the vast majority of common lens filter sizes, and a dedicated adapter for the Irix 15mm f/2.4 lens is included with the holder. FIRST IMPRESSIONS Coming complete with a polarizer and adaptor for the Irix 15mm f/4 ultra-wide makes this an attractive proposition for landscape shooters.