Any one out there tested close up filters on a Nikon 300mm f4 PF? I've got a set of Neweer +1/2/4/10 and I tried using them on my D610 + 300mm lens. Having a number of focus issues and the +4 and +10 are pretty much unusable. Constant focus hunting. Filters work without issue on other Nikon lenses. Hoping this isn't a sign of bad focusing issues with the 300mm or perhaps the close-up filters have a limitation (thinking not since they are passive).
Just wondering if anyone else has played around with this scenario?