Technical Specifications
Focale400 mm
Ouverture maximalef/2.8
Ouverture minimalef/22
Construction optique16 elements in 12 groups (Including 2 fluorite and 2 ED glass elements plus meniscus protective glass and Nano Crystal coat). 2 aspherical lens elements, and lens elements with a Nano Crystal Coat.
Angle de champ6°10' (4°00' with DX-format camera)
Distance minimale de mise au point
2.6m from focal planeRapport de reproduction maximal1/6.9
Nombre de lamelles de diaphragme9 (rounded)