[OM] 28-48mm f/4 S Zuiko variations?

[Erwin Voogt]

Hi,

My specimen has number 115686.
About the new test results: that are odd numbers.
Anyone out there who can give a physical/optical explanation?

Aperture Center Corner
f/4 A- C 
f/5.6 A- B
f/8 B+ B+
f/11 B+ B+ 
f/16 B+ B+
f/22 B B 

Bye,

Erwin Voogt
Utrecht, The Netherlands
http://members.nbci.com/_XMCM/photovoogt/index.html


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