zlacker

If I absently place my hand on my chest, the resulting configuration looks just like the “unnatural” one in the painting.

>>mordym+(OP)
Maybe because you're biased having read the article? I just looked at a picture of me waving at the camera taken 2 weeks ago, and my fingers are splayed apart with even spacing.

>>carabi+t8
It's a pity we don't have renaissance paintings of subjects waving at the painter. While making a silly face too.

>>carabi+t8
When I rotate my hand toward my body the middle fingers come together, when it rotate it away they fan out. I can feel this happening in the tension of my muscles and ligaments during rotation. In contrast, pulling my two middle fingers together on purpose with my hand held out, without also pulling together all my fingers, feels weird. I simply think this is a mechanically likely think to happen due to the design of the forearm, though it may not be the case for everyone depending on tension and strength and anatomy.