When it comes to tree art, my favorite artist is Claus Sievert, a native of Germany who has lived in California since around 1980. Claus has traveled all over the mountains of California and made drawings and photos of great trees. Then, in his studio he makes copper plate etchings and then makes prints that are signed and numbered. In the past 25 years, I have acquired 14 of Claus's prints that I proudly display on one wall of my living room.
Check the link to see some of his work. You will see lots of deadwood done in photographic detail.
http://www.claussievert.com/prints.htm
Mike