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Message: <blockquote data-quote="typo" data-source="post: 3140810" data-attributes="member: 83808">Thanks for the very interesting write-up. I wouldn't have expected such a marked difference in an 8x.On a couple of occasions I've tried the whole IS range, including standing on the shaking platform Canon bring along to shows. (In my case at least that served to emphasise the limitations of the IS mechanism). There was a small discernible reduction in shake in all with possibly the 10x42 being the best but I certainly wasn't getting that kind of improvement in detail you're suggesting. Unfortunately the weight, balance and general ergonomics meant that some models were significantly less steady than my usual pairs even with the IS mechanism engaged.I'm supposing we all vary in the strength and frequency of the tremors that are transmitted to the view. I suspect in my case its mostly a tremor in the hand caused by a poor balance that the IS has difficulty cancelling. It appeared to be fine with the lower frequency through the arms but that seems to be much less of an issue for me. I'm glad it works for you, and clearly a large number of others, but on the evidence so far, not for me.David</blockquote>