Arne, I really appreciate your work. Though I'm pretty familiar with a great number of lenses mentioned in your publication, there still are quite a few things completely new to me, too.
Would you mind a little correction (mostly on the local terminology) though?
•
RF-3, RF-4 and
RF-5 process lenses are not 4/4; they are 6/4 symmetrical Apo-Planar type ones. (Not bad glass at all but alas they've got the worst of the Soviet coating versions - the 2-layer chemical one. The single coating on the
I-11 and
O-2 and
O-6 process lenses is much better.)
• "
MC" on a Russian lens does mean multicoating, and nothing else but multicoating. (I can't forget my surprise when I read in a Minolta book that their "MC" meant "Meter-Coupling"!) But: the Soviet terminology assumed
3 layers were enough to call it MULTIcoating, so do not expect the Soviet MC be as good as an SMC or T* - though the Soviet MC is usually better then the Soviet single or 2-layer coating.
Also, all the Soviet era MC lenses were marked as such (and sold for up to 1.5 times more then the non-MC ones). Any lens made in USSR and not marked "MC", has less then 3 layers of coating applied.
The "MC" was put in front of the lens name, such as "MC Jupiter-9".
• The "
M" in the end on the lens name ("I-11M", "Jupiter-21M", etc.) is for "Modified". The modifications were different but they always were barrel modifications, the optics being the same.
• There was no one-letter mark to indicate a process lens ("reproductsionnyi ob'yektiv" in Russian - no "m" in any of the two words, BTW).
• The Russian for "sunk mount" is "uglublyonnaya oprava" - which contains no "s", and it was never marked as "S" ("C"). In fact, no special mark was used for a sunk mount (though any new mount could be marked with an "M").
• Also, I've recently posted a bit of info on
Russian aerial lenses here:
http://www.largeformatphotography.in...it-exist/page5
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