Quote Originally Posted by RichardH View Post
By that description it looks like I have 3- NOT AS OLD, 1- NEWEST. of the EL-Nikkors. This is just something that I was curious about since I had a few and they are all different in how they are physically different from each other. I guess they were made one way until the molds wore out and then changed the style and shape. ( Just thinking )
I have one 75mm that stops down to f45 and the others are 50mm that stops down to f16.
Thanks
Richard
They used the same "EL NIKKOR" name for both the four-element and six-element lenses. The 75mm is a four-element lens. The 50mm f2.8 is six-element and the 50mm f4 is four-element.