05-02-2013, 05:38 PM
Quote:I really can't see how Canon can release this lens onto the market. It's got such a serious design flaw that it's not fit for purpose. It should be the ideal lens for me to go with the 70-200 f4L Is but as it is I will stick with the slightly heavier but less sharp 24-105 f4L.There are many who use this lens without reported problem... From what I have seen, they use a 6D. It might be that with AF it is camera body dependent, this focus shift. I have no way of checking that, but it might be worth checking it out.