Ulric Collette has possibly created one of the most visually intriguing family portrait methods ever known, and he did it on accident.
While editing a "photo a day" project, Collette managed to morph a picture of himself and his son together. Fascinated by the outcome, he continued to photograph and morph different family members together into one singular portrait. He dabbled in all sorts of relations; fathers and sons, mothers and daughters, cousins, and even twins. Although the age differences between some of the family members are substantial, with practice Collette was even able to make the portraits look natural.
After fawning over his works, I discovered that with a Photoshop software and some portraits of family members, anyone could experiment with a similar technique. Seeing exciting, creative accidents like this one brighten my week, and I look forward to stumbling upon more.
I hope you all check out the rest of Collette's stunning work here: http://ulriccollette.com/