[Brightcolours]

Hi Brightcolours,

                         Thanks for the link I haven't seen this before, checked the weight of the lens again 166 gms for sure, confirmed by another poster, seems many like it and rate it similarly as I do, maybe I was mistaken about a symmetrical design. Looks like you got a bargain with your Nikkor, do you mean it has a "K" mount for Pentax? As for photos I haven't a huge stock, it's not my go to lens.

well, I guess the weight from that link is just wrong.

Probably your lens is pretty similar to the earlier 50mm f4 designs, so it would be like this:



http://www.pentaxforums.com/lensreviews/...-Lens.html

 

About my "new" Nikkor, no the "K" does not mean K-mount. It is a generational "nick name" which I do not know the origin from.

First, Nikkor F-mount lenses were just that, F-mount. They were all metal including the focus ring (and zoom ring if applicable). Then came redesigned lenses with rubber focus/zoom rings. Then a change came in aperture communication, known as "Ai". Soon after came a slight change of that, called Ai-S. So in the Nikon F-mount world there are 4 groups of MF lenses: Ai and Ai-S, and two pre-Ai types. The first is just referred to as "pre-Ai" or "non-Ai", the latter referred to as "pre-Ai K-version".