SUMMARY
For effective portrait photography, understanding the "trinity prime lenses"—35mm, 50mm, and 85mm focal lengths—is crucial. A 35mm equivalent lens is ideal for full-length shots when aligned with the subject's navel, maintaining proportions. For half-length portraits, a 50mm equivalent lens, aligned with the chest, offers flattering results. Headshots are best captured with an 85mm equivalent lens, aligned with the nose, to minimize distortion and enhance subject separation. While any lens can be used creatively, knowing their intended purpose and behavior is key to achieving desired effects.
TAKEAWAYS
Use a 35mm equivalent lens for full-length portraits, aligning with the subject's navel.
Employ a 50mm equivalent lens for half-length portraits, aligning with the subject's chest.
Utilize an 85mm equivalent lens for headshots to minimize distortion.
Understanding lens purpose is vital for intentional and effective portraiture.