I've just bought a Sony DSC-QX10 and I like to connect to my iPhone 6 Plus via NFC. Anybody knows how ? Thanks.

Sony's support website only has NFC instructions for Android, but it hasn't been updated sine 7/03/2104: https://us.en.kb.sony.com/app/answers/detail/a_id/43721/c/65,66/p/40096,90706,90 707/

You may want to contact Sony Support via chat, email or phone as described in http://esupport.sony.com/US/p/support-contacts.pl?mdl=DSCQX10

NFC in the iPhone can only be used for Apple Pay at this time.