I had my mind set on a Nikkor M 300mm/9 to go along with my 90mm & 150mm for 4x5 until I came across an APO-Ronar 300mm/9 for sale for about half the price. Intrigued, I did some research and was pleased to find that it is a sharp lens and good for 1:1. I know I can't go wrong with the Nikkor, but what are your thoughts on the APO-Ronar? My bellows extends to 390mm.
Bookmarks