In article <867770915.5789@dejanews.com>, swong@memc.com says...

>I've been looking for some fix-focal lenses for quite some time and
>limited my selection to this lenses for my N90s:
>
>1) Nikon 24mm 2.8D
>2) Sigma 24mm 2.8
>3) Nikkor 50mm AF1.8
>4) Nikon 85mm 1.8D
>5) Tamron 90mm AF2.8 SP Macro
>
>Does anyone have any experience with these lenses? All the above lenses
>have received good reviews. Sigma 24mm 2.8 has received better reviews
>then the Nikon 24mm 2.8D, yet it is half the price of the equivalent
>Nikon. Are there any catch? Is the Sigma D-compatible?
>
>Have anyone had experience with the 50mm F/1.8 AF Nikkor? It is price at
>less then $100 but has received very good reviews, and it seems
>irressistable at this price!!

I am familiar with most (see; http://www.fcinet.com/ruether
look under "I babble...", then "SUBJECTIVE Lens Evaluations
[Mostly Nikkors]" - and look at some of the pretty pictures,
too while you are there...;-) All of the above are fine lenses,
with the possible exception of the Sigma - not bad, but likely
less crisp at the edges/corners at most stops than the Nikkor...
(I never have figured out where the reviewers get those nice
off-brand lenses that turn out to be so bad when I try them...;-)
Hope This Helps
(David Ruether - http://www.fcinet.com/ruether )