Quote:
Originally Posted by Stefan Buda
Hi Josh,
That's interesting, are you sure it is not 2 groups of 3 elements?
I have not tried, but it may be possible to have 2 elements at f/7 and achieve the extra large field. Or maybe they did go aspheric with one of the lens surfaces, as rally suggested earlier in this thread.
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I am sure
I have taken them out several times to clean, only 2 elements convex faces towards each other.