In article <19961120034100.WAA07975@ladder01.news.aol.com>, napperwm@aol.com says...

>I have an older Nikomat EL with a 105mm f2.5 non-AI lens. Its an older
>lens with the silver focus barrel.
>Would I see an improved image if I purchased a newer AI or or even newer
>lens in the 105mm. The lens I have is great but could I do better in
>105mm?

Yes, though good in its day, the newer version (very large rear element,
for identification) is even better - a really excellent lens.
Hope This Helps