Re: Nikon Objective 2x/0.05 with Iris Diaphragm

There was a 1.2x, 2 and 3x and a special low power condenser to fill the
large field that had no diaphragm ,so the objective diaphragm was most
likely primarily for contrast control.
"NoSpam" <NoSpam@xxxxxxxxxxx> wrote in message
news:0P6fg.12543$U_2.6913@xxxxxxxxxxx
Hallo,

I own a Nikon objective 2x/0.05 for a 160 mm tube with a long working
distance.
The objective also has an iris diaphragm.

Can anybody tell me the purpose of the diaphragm?

Thank you

G. R.




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