Well, I found the original comments/guesses (in the first post comparing ENTJ/INTJ) really interesting, and I thought I'd take it a step further to see what people think about ENTJs vs. INTJs and artistic-ness.
It's not exactly a setup; to be honest, I thought most people would pick "ENTJ" when I asked who took the photo. I'm surprised that everyone said "INTJ"...
When I look back at both brothers and their various but limited creative pursuits throughout their lives, the INTJ definitely stands out. He liked to draw growing up (he especially liked doing stuff like taking, say, a drawing I did of a maiden and then "ruining it" by drawing Conan the Barbarian chopping her head off!!! HAHA) and he took up the bass guitar for a while, and tried his hand at painting. My younger brother, the ENTJ, did try drawing for a couple of months, but gave it up almost immediately and really has little interest in much else artistic, except for photography and secondarily, cooking (a little).
So who took the picture? The ENTJ.
This picture was taken for his high school photography class. One day he told me, "Let's go to the park, I have to take a picture for my final." We went and he took three quick shots and the one that is my avatar is the one he used for his class.
Now he does freelance filming of surfing/snowboarding occasionally, and likes taking pictures. He's considering going to school for either photography or vitalogy/enology (the chemistry/agriculture of wine making).
One more thing, the ENTJ is deaf. This could be a reason why he likes using his visual sense in photography.