Bertil Nilsson is a Swedish photographer and filmmaker known for his innovative approach to capturing the human form, particularly in the context of dance and performance. His work often explores the intersection of movement, anatomy, and the natural environment, resulting in visually striking images that challenge conventional notions of portraiture and action photography. Nilsson's most notable project, "Naturally," is a series that focuses on the male form in natural landscapes, blending elements of dance, gymnastics, and acrobatics.

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Over the years, Nilsson has collaborated with a wide range of artists, dancers, and performers, and his work has been exhibited internationally in galleries and festivals. His photographic style is characterized by meticulous attention to detail, innovative use of lighting, and a focus on the emotional resonance of physical expression. In addition to his still photography, Nilsson has also ventured into filmmaking, further expanding his exploration of movement and form.