Anne wrote But even if you are being a crumudgeon, thanks for the added info, below. I used mine with a 100 f 4 macro and a 50mm f 4 macro, both of which have 49mm threads (they are about 20 years old)
annsan I've used mine with step up rings right up to 58mm. Team a 100-300 up with nikon close-up lenses and pop the ring light on for incredible macro shots of butterlies.... Just a thought Vic
