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| p.1 #6 · Firmware upgrade for the 800mm IS? |
Well, Canon Canada hasn't done very many of those retrofits either, since our market for lenses such as 200 f/2 IS and 800L is also small compared to the US market.
However, it took them a few weeks to retrofit my 200 f/2 IS (the 800L didn't need it because it was a late model, and most of that time was spent waiting for the replacement main flexboard from Japan), and the job seems to have been done OK, because my lens behaved as well as it had ever done before.
I haven't had 5DIII available to me, thus I could not check the lens for IS noise before or after the retrofit.