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Message: <blockquote data-quote="DanC.Licks" data-source="post: 3300101" data-attributes="member: 111263">Good idea. Still.... I used to be able to "justify" the 400 here because it was like a small scope... until now. Doubt I will ever use it MF again!I got it from an online sales place in Switzerland that only ships within Switzerland, so a friend sent it on to me. There are a number of places in Germany that ship everywhere. There is only one model available in Europe, the MB_EF-m43-BM1. There is really no significant difference between the two. Firmware update was a snap. Needs the new firmware to AF.I used to have the EC-20 and used it on my 50-200, but I can assure you, the Canon will blow it out of the water! The EC-14 is really good, but I found the EC-20 poor.I got the Extender III to work also by taping over the first three pins in the Extender. Well known trick. Focuses very well. Now if I could only get my 90/600 to AF.... :smoke:</blockquote>