This is another image from our trip to Borneo a couple of years ago. I spent a few days photographing the endangered Probocis Monkeys from the boardwalk at Bako National Park. This is my favorite image from those days. Full frame.
20D 500F4 1/320 F8, evaluative metering -0.3, iso 400, 580ex fill flash -1.3
He does look like he is sunning himself. Good job framing with the tree. Now if you could have gotten a bit higher then that OOF brush would be out of the frame and not blocking the foot - but I am guessing that was not possible.