![Quote](images/misc/quote_icon.png)
Originally Posted by
Mark J
I think that the rear asphere in these is correcting a lot of aberration from the front group. Hence the tolerance in positioning of the two sections relative to each other is likely much tighter than some earlier lenses.
Yes T.C. I can believe that the lens shims are thin, might be a 'thou' or slightly more, to make a useful step in the air gap.
I spoke to Schneider about my Componon-S 210 a few weeks ago and they warned me to look out for a shim when I took it apart to alter the mount. It didn't have one, but they said some have one, some don't.
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