Adapter that allows shooting with the full-frame angle of view of the original lens on Z-mount APS-C size cameras. Lens Turbo Ⅱ M42-NZ (M42 mount lens - Nikon Z mount conversion) Focal Reducer Adapter Includes adapter body, box, and Japanese instruction manual. (The camera and lens in the second image are not included) The Lens Turbo II M42-NZ is a mount adapter equipped with a focal reducer lens for attaching M42 mount lenses to Nikon Z mount camera bodies. By incorporating a high-quality 3-group, 4-element reducer (reduction optical system) lens, it reduces the focal length by 0.726x (see below: reference value), enabling shooting with the original lens's angle of view (almost full-frame) even with APS-C cameras. One of the features is that the F-number becomes one stop brighter due to the light-gathering effect of the reducer lens, allowing for faster shutter speeds. In addition, the position of the reducer lens can be finely adjusted, reducing interference between the rear lens element and the adapter. (※Infinite focus shooting may not be possible when adjusting the position.) Reference values for focal length When used with a 50mm lens 50mm x 1.5 (APS-C focal length multiplier) x 0.726 (Lens Turbo focal length multiplier) = 55mm equivalent angle of view When used with a 35mm lens 35mm x 1.5 (APS-C focal length multiplier) x 0.726 (Lens Turbo focal length multiplier) = 38mm equivalent angle of view Comparison with the original Lens Turbo The focal reducer lens of the Lens Turbo II has been optimized for APS-C sensors of mirrorless cameras, improving image quality in the peripheral areas compared to the original Lens Turbo. Size: Φ68.5mm x 30.5mm Weight: Approximately 230g