kctay wrote in message <34743415.6347@public1.sta.net.cn>...

[most deleted...]
>what i hope to have is more parameters that go into describing a lens
>CORE quality. and since the function of a lens is to take clear & sharp
>pictures, the parameters used should lean towards that rather than
>things like filter diameter.
[...]

If you are into Nikkor lenses, you may want to check out the
first entry in the index under "I babble" on my web page...
Hope This Helps
David Ruether - http://www.fcinet.com/ruether