adapter ring help

[cgabs]

I have a nikon d40 with the stock lens, and i have a titanium super wide macro 0.42XAF fisheye, I was wondering if anybody could help me out with what adapter ring i would need to buy for it. thank you

 

[ann]

look at the information on the lens you will find a series of numbers one of which will look something like this 52mm, or 77mm etc. this is the filter size for that particular lens.

or go to the spec sheet on the manufactor site that makes the lens and it should give you that information