I currently use the Kase Magnetic filter system and their magnetic stepping rings for my 82mm filters. I'm about to purchase a Canon RF 16mm f2.8 whose filter size is 43mm. It appears that Kase do not manufacture a 43-82mm ring so I'm surmising I'll need to buy a stepping ring to attach the Kase magnetic holder ?
If so is there a recommended size I should get to avoid vignetting or other issues
If so is there a recommended size I should get to avoid vignetting or other issues