Firmware Friday has been on a brief hiatus the last couple of weeks, but it returns in style this week with news from almost all of the main players in the camera market. Canon, Fujifilm, Nikon, Olympus, Panasonic, Ricoh and Sony are all represented in this roundup, which covers everything released in the last three weeks. (And so, brings you right back up to date if you're a regular follower of the column.) There's a lot to talk about, so let's get right down to it! Canon EF 200-400mm f/4L IS USM Extender 1.4x...
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