The zeiss 28mm f2 t distagon zf2 lens closes the gap in zeiss line of high end lenses for analogue and digital slr cameras where the jump in focal length from 35 mm to 25 mm is too big for many demanding photographers this 28mm lens offers a excellent alternative modeled on current state of the art lenses in this category it features markedly improved optical quality thanks to the floating design image quality remains almost consistent from the close up range to infinity