Nikon Rumors Forum » Topic: FYI - Manual remote focusing with Sigma teleconverters issue http://nikonrumors.com/forum/topic.php?id=1311 where there’s smoke there’s forum fire en-US Wed, 22 May 2013 00:36:43 +0000 http://bbpress.org/?v=1.1 <![CDATA[Search]]> q http://nikonrumors.com/forum/search.php Panamon_Creel on "FYI - Manual remote focusing with Sigma teleconverters issue" http://nikonrumors.com/forum/topic.php?id=1311#post-22360 Mon, 11 Jan 2010 14:24:13 +0000 Panamon_Creel 22360@http://nikonrumors.com/forum/

Just as an FYI, Sigma tele-converters disable the ability of remote manual focusing via camera RC software (Nikon CCP2, NKRemote, Helicon remote,...) if the Lens & TC combo goes above f/5.6. With Nikon TCs the remote manual focusing function remains and haven't tested it with other TCs like Kenko since I don't have any to test with :).
Wrote to Sigma about it and the reply was that they'll take note of it but have not planned any firmware update to resolve the issue.