oigtlander's 15-35mm Zoom Viewfinder (Black Metal) will show you what your wide-angle lens (from 15mm to 35mm) is capturing when used with virtually any full-frame film or digital rangefinder camera (Leica M9, for instance), or with the 1.3x crop factor Leica M8 or 1.5x crop factor APS-C cameras like the Sony NEX or Ricoh GXR M. This zoom viewfinder features excellent optical quality, with 8 elements in 7 groups and 3 prisms. A built-in diopter is continuously adjustable from -2.8 to +1.3. The viewfinder has click-stop settings for 15, 21, 25, 28, and 35mm, and parallax lines show the image cut-off at 3.28' (1 m), with marked values for 1.3x and 1.5x crop cameras.

Type B covers 1X for Full frame, 2x for Micro 4/3 cameras and 1.3x for the Leica M8 and M8.2