Tamron SP 80-200mm f2.8 LD BBAR MC for Nikon F brand_Novoflex this lens is clearly not

this lens is clearly not meant for day to day shooting: it produces a circular image in the middle of the frame

The Nikon BR-5 is a stepping ring designed to allow lenses with 62mm front threads to be reversed onto the Nikon BR-2 or BR-2A (not included) which are otherwise compatible only with 52mm threads

which would normally mean that you'd be lucky to cover Micro Four Thirds

smaller than even a Barnack Leica (though it's a bit thicker and definitely weirder)

of course- the field of view is limited by the size of your camera's sensor- but the mount can be repositioned left and right to adjust framing or to produce images for later panoramic stitching

Tamron SP 80-200mm f2.8 LD BBAR MC for Nikon F brand_Novoflex this lens is clearly notThe Tamron SP 80 200mm f2. 8 LD BBAR MC is a fast telephoto zoom lens with Tamron's interchangeable Adaptall mount system (a Nikon F mount is provided here). This is a well made manual focus lens, with smooth focus and zoom action. Cosmetic condition is very good, with light finish wear; the glass is clean, with light dust. Includes hood and original case (which has a bit of wear.)