From the EXIF data (you can click on an image and obtain this), it was 200mm which is my 70-200mm f2.8 VR lens on a D300, at ISO 200, f11, and 1/200 sec, handheld, using studio strobes and Pocket Wizard wireless triggers. Key light (Softbox) to the left of subject, and fill to the right set at lower power.
Bravo