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Message: <blockquote data-quote="binomania" data-source="post: 3239771" data-attributes="member: 90412">4Hi Binastro, thanks  a lot for your comments.I've insert only how Canon Japan declared in his website:<a href="http://cweb.canon.jp/binoculars/lineup/12x36is3/spec.html" target="_blank">http://cweb.canon.jp/binoculars/lineup/12x36is3/spec.html</a>I can find these characteristics also in Canon Italy website:<a href="http://www.canon.it/for_home/product_finder/binoculars/optical_image_stabilisation/12x36_is_iii/" target="_blank">http://www.canon.it/for_home/product_finder/binoculars/optical_image_stabilisation/12x36_is_iii/</a>I've seen the Canon diagrams, probably we missing something or/and them consider  a group in more. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />Canon 18x50 and 15x50 have 7 elements in 5 groupsYes, there are few changes. In summary, I would say, in my poor english, that an owner of the old model could keep it, while a new buyer would be satisfied with the small and new enhancements :I hope Canon will update also 10x42 and the two 50mm.Piergiovanni</blockquote>