While doing many portraits over the last year, I have noticed a very difference between how females and males react in front of a camera. It does not seem to be affected by age.
In this photo, notice how relaxed and posed the young girl is and how the young boy seems to be more tense and suspicious he looks. For whatever reason, this seems to be the norm.
In this photo, I wanted to show how boys and girls react so differently.
Camera settings: Nikon D3, Nikon 28-70mm f/2.8 at 62mm shot at ISO 200, f/9.5 and 1/125th of a second with a SB800 with softbox attached right and left of subject and set to 1/8th and 1/16th power and triggered with AlienBee radio triggers.
Lightroom—Set white and black points, added mid-tone contrast, added clarity.
Photoshop—use nik Color Efex Pro soft focus filter to add minimium amount of soft focus to the overall image.