I am going to buy Lee filter lens hood to fit G-Claron 355mm/9 and Nikor-M 450mm/f9. Someone told me that it would be better to buy Lee wide angle hood with filter slot because I shoot B&W.

I think I may need adaptor rings to fit the above two lens with the wide angle hood.

What are the sizes of adaptor that I have to buy?

Thanks in advance.