Nowadays you can get for bargain on Ebay or local camera shops.This lens was quite popular from middle of '60. It was targeted for every day usage for advanced photographers, I guess used by many professionals too because much easier to handle than faster lenses.
I really like the focusing, build quality of this lens. One f/ stop down , sharp enough to capture excellent images, color rendering quite good , but much less quality than my favorite Tamron SP 300 mm f/5.6. At the first look I guess this lens equal quality than Carl Zeiss Jena Sonnar 300mm f/4. What can I say more this is a good lens, recommend to buy.
nikon 300mm ai