Voigtlander Nokton 58mm f1.4 SL for Nikon F  type_Film Cameras and Nikon slip-on viewfinders with

and Nikon slip-on viewfinders with the included adapters

this IIF is in excellent condition

Doubles the effective focal length of the lens mounted to it

This Leitz SBOOI is possibly the best looking 50mm viewfinder ever made (official Camera Traders opinion)

and WiFi connectivity

Voigtlander Nokton 58mm f1.4 SL for Nikon F &nbsptype_Film Cameras and Nikon slip-on viewfinders withVoigtlander Nokton 58mm f 1. 4 SL for Nikon F mount in excellent condition. Superb image quality and mechanical feel in a relatively compact package. This is a manual focus lens with full AI S compatibility, as well as CPU contacts for proper matrix metering and EXIF data. Essentially, this lens mirrors Nikon's own AI P protocol. Clean glass and very smooth focus. Includes hood.