In article <4ab23j$fjb@vivaldi.telepac.pt>, janeca@telepac.pt says...
>I want to buy a "wide angle" lens for my new FM2.
>I´m on a very low budget so I searched the "used photo
>equipment" stores in Lisbon (PORTUGAL´s my country),and the
>only lens I could find that I could afford was an MF nikkor
>35mm / 2.5 serie E lens (170 US$). (..)
>What is a serie E lens? (...)

Wow! $170 US! I guess we are spoiled over here - that lens would
almost certainly be (well) under $100 US. I like the lens, but I
have heard from others of samples that were not great. Try to
shoot film with it in the store, have the film processed, and
check the negatives with a 10X magnifier - most of the frame should
be sharp at f2.8, and virtually all of the frame (short of the
extreme corners) should look crisp by f5.6 in a good sample (for
subjects in focus, of course!). "E" lenses were produced by Nikon
as relatively inexpensive name brand alternatives to cheap off
brand lenses. The zooms were mostly metal, but the single focal
lengths had mostly plastic barrels. Most were optically excellent
(the only one of the "E's" that I don't like is the 28mm), and they
are functionally identical to the other lenses in the line on
AI bodies (it will work fine with your FM2). (BTW, if you can
afford that 20mm f2.8, it is a hum-dinger [really superb!].)
Hope this helps.