...I seem to have lost an adapter and have no way of affixing the filter to the lens.
Here's the story.
Back in 2017 I was getting ready to travel to Charleston SC to watch the August 21 solar eclipse, and had recently bought a Nikon D5600, which came with the usual two kit lenses, including the 70-300mm zoom lens with a front diameter of 58mm. To shoot a solar eclipse, of course, you need an eclipse filter and I was advised to get this polarizing filter. Looking back, I don't remember who it was or why they advised me to get this filter, and it seems odd that I would use a 62mm diameter Vivitar filter on a 58mm diameter Nikon lens. Still, it worked; I could fasten the filter to the lens and adjust it for the degree of polarization I wanted. But now I can't attach it to the lens. I've rifled multiple times through my camera back but can't come up with the adapter. As best I recall, it was a very thin circle of dark metal which I think was threaded inside and out.
Where can I get a replacement? I'm not even sure what to ask for, especially if I have to order it online.
There is an annular Annular Solar Eclipse on October 14, 2023 (Great North American Eclipse ) coming up in the fall of next year, and I don't even need to travel anywhere for it, so I'm going to need to resolve this before then. Why am I asking about it now, so many months before the event? Well, as you might have guessed I haven't used the polarizing filter much, so I can't allow myself to forget about it until a few weeks before the eclipse and then rush around in panic mode trying to find the right adapter, or another filter.