Sigma APO Teleconverter 1.4X EX DG for Nikon F lens mount_Other 4x teleconverter for select Sigma

4x teleconverter for select Sigma lenses on Nikon F mount cameras

but we can't guarantee compatibility

camera mount is the standard 1/4" (reversible to 3/8" with minor disassembly)

Wait I should probably take that out

Sigma APO Teleconverter 1.4X EX DG for Nikon F lens mount_Other 4x teleconverter for select SigmaThe Sigma APO Teleconverter 1. 4X EX DG for Nikon F mount is a good quality, compact teleconverter for use with many (but not all!) Sigma F mount zoom lenses. It may also work with other brands, but we can't guarantee it. Please check your lens instruction manual for compatibility: this is not a universal teleconverter and it won't work with everything. In excellent condition, with clean glass and good function. Includes softcase.