I have a couple of classic Ektar lenses (105mm F3.7 for my Century Graphic and 203mm F7.7 for my 4x5 view camera). I have push-on filter adapters that allow me to mount Series VI filters. What I am looking for is a Series VI to 49mm adapter so that I can use the 49mm filters that I have for my other lenses. I haven't had any luck finding such adapters at the usual sites (B&H, Filter Connection, etc).
Can anyone recommend a source for such adapters?