Archived posting to the Leica Users Group, 1997/07/27
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Willem-Jan Markerink,
>>that's the cause of my confusion too...70-180 report is in the Jan issue<<
Not sure what periodical you are referring to; however, in the July 1996 issue
of "BAS report Leica R-lenses" test results, page 31, in the first paragraph of
the test on the f2.8/70-180 Vario-APO Elmar, I quote: " No focus difference for
IR exposures".
It also states under optical performance, an: " Average sharpness~0.008 mm &
better"; which if my math is correct equates out to about 125LPM. Assuming this
occurs at f2.8 & gets better thru f8; it's one hell of a lens :~)!
Tom D.