In article <5c644c$bqt@jethro.Corp.Sun.COM>, scarl@pmops.corp.sun.com says...
>In article t5o@news.mind.net, Peter Brunner writes:

>> Just a note: the PN-11 should be sold with the 105f4 Micro-Nikkor.
>> lthough the Pn-11 can be used separately with some lenses, it really is
>> meant to provide 1:1 reproduction with the 105f4.
>> If you need further info on Nikon equipment I'll be glad to help.

>105mm micro Nikkor focuses to 1:1 on its own. It doesn't need extension
>tubes. I don't think I'll be calling on you for help on Nikon equipment.

Hmmm, I guess you are not familiar with the 105mm f4 (or 105mm
f2.8 MF) Micro-Nikkors - neither focuses to 1:1 without the PN11
[or a 2X converter]...;-)
Hope This Helps