Quote Originally Posted by KenFretz View Post
Nikon originally made 50mm lenses in f2.0 and f1.4 but as part of a marketing move in 1978 they started making the lower priced lens with a maximum aperture of f1.8 to make it seem that you were getting more.
Not only did it seem like you were getting more... you were getting more! 1/3 stop more.

To be sure, the f/2 50mm Nikkor is a great lens, but if 1/3 stop has no value, why did Nikon ever bother making an f/1.2 lens when it already had an f/1.4?