I sold a SIGMA 600MM F8 camera lense, and the person who bought it owns a EOS1n HS. i was wondering if anyone could tell me what I need or if it can be made to attach. I know nothing about cameras, so i signed up to the forum.

Thanks

the ebay page with the lense and pictures on it is cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=280016397445&rd=1&rd=1