Quoting "Daniel J. Matyola" <[email protected]>:
Does the "HD" mean anything?
HD is the new lens coating technology, replacing SMC.
This article suggests that all DA lenses have been updated from SMC to HD:
http://www.imaging-resource.com/news/2014/03/19/farewell-to-flare-pentaxs-hd-limited-lens-lineup-gets-a-real-world-test
However, the Pentax web site still lists most of them as SMC with just
a few with HD.
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Cheers
Brian
++++++++++++++++++++++++++++++++++
Brian Walters
Western Sydney Australia
http://lyons-ryan.org/southernlight/
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