Nikon D850: The Essential Guide. An Easy User Guide Whether You’re An Expert of Beginner(Kobo/電子書)

Nikon D850: Pocket Guide(Kobo/電子書)

Nikon D850 Experience - The Still Photography Guide to Operation and Image Creation with the Nikon D850(Kobo/電子書)

David Busch's Nikon D850 Guide to Digital SLR Photography(Kobo/電子書)

Mastering the Nikon D850(Kobo/電子書)

Canon EOS Rebel T8i/850D For Dummies(Kobo/電子書)