Schneider Apo-Digitar 150/5.6
The Schneider 150mm f/5.6 Apo Digitar N Lens is a telephoto large format lens specifically designed for use with digital backs, which require extremely resolved, color correct image circles of a smaller size. Digital backs also benefit from use at larger apertures to avoid image degradation from diffraction. This version of the lens is mounted to a conventional Copal #0 shutter.
The 150mm Digitar is appropriate for use with backs as large as 63x63mm, and upon such backs it records an image area similar to that of a 133mm lens upon a 6x6 format camera. It is an ideal general purpose telephoto lens for both field and studio work, remaining sharp at a broad range of reproduction ratios and capable of its maximum resolution at f/5.6. Its 110mm image circle size remains at all apertures, even f/5.6, allowing it to also be used in front of 6x9, 6x7, 6x6, and 645 format film backs to provide superior image quality versus any medium format SLR lens.