Amir Bamdad wrote in message <34CA60B5.E4000D80@erols.com>...

>Does anyone have information regarding Nikon 15, 16, and 18 mm wide
>angle lenses? there is such a difference among the prices for the
>different focal lengths. What is the difference in quality of these
>lenses. I appreciate any advise.

You will find information on these lenses on my web site,
under "I babble".

>Also is anyone familiar with the old (I think F, non auto) Nikon 35 mm
>shift lens. I have an opportunity to buy one but the as you shift the
>lens darkens at the limit of the shift.

Much of that darkening is a viewfinder artifact - which is why
TTL meters that read off the viewing screen read inaccurately with
shifted PC lenses.
--
David Ruether
http://www.fcinet.com/ruether
ruether@fcinet.com