In article <5671rt$4bi@niamh.indigo.ie>, mike@NetworX.ie says...

>I'm considering a wide-angle lens. I currently have a
>24mm on a Pentax, so I'm thinking of getting the Nikon
>20mm for my F70 (N70).
>I've never used a 20mm lens before, so I'm wondering
>is it too wide? Is it difficult to take photos that
>don't have noticeable distortion?
>I find the 24mm okay, so long as the lens plane is
>parallel to the subject plane, but suspect that 20mm
>might be going one-step too far.
>I want the lens for interiors and landscapes/streetscapes,
>etc.

Everyones reaction to lens angles-of-view is different,
but here is mine (having owned fisheyes from 220 degrees
circular to full-frame, and 15, 18, 20, 24, 28, and 35mm rectangular-perspective wides [including 28 and 35mm
PC's]): I like wide angles, and NOTHING is too wide! ;-)
The 15mm, used with sensitivity, is as "nice" as a 35mm
(which I consider a "normal" lens, and which I use for
at least 75% of people commercial work, the 20mm being
used for most of the rest). Wider lenses actually make
it easier to photograph with parallel vertical lines,
since they require less tipping to include what you want
from a given distance. The 20 is the longest wide I would
normally use for showing building interiors, and the 20
is great for street/landscape shooting. My favorite
wides: 16mm fisheye, 16mm fisheye on a 1.4X converter,
15mm, 20mm, 28mm PC, 28mm - with my very favorite being
the 20mm. I sold the others, except for an 8mm, and the
commercially necessary 35mm's. BTW, I could never get
very excited about the 24mm or 35mm FL's...
Hope This helps