I'm trying to figure out how to use a Crown Graphic, early 50s vintage, that I purchased blind a couple years ago. Everything seems to be in working order. The camera came with several series 6 filters and a Kodak Series 6 adapter ring, 38 mm. I must be missing something, since the ring doesn't fit on my 152mm Ektar lens nor do the filters stay in place if I put them in the adapter ring that was in the carrying case.

Sorry to be dense about this- I'm sure it's been asked before- this is post #1 for me so hopefully future questions will be better. I see there are various
rings and adapters on eBay but I'm not sure what I should be looking for. I've read about filter systems that can be used with many different lenses, but I was hoping there would be a simple solution filtsince I already have 5 different series 6 filters.

Ted Gross