5D Mark III Firmware update version 1.2.1

I’ve been reading in various photography forums regarding an issue with the 5D Mark III when used with a Speedlight and its AF Assist beam. Specifically, some folks were claiming that focusing became very sluggish to a point where they were missing shots. While I haven’t noticed a glaring problem to a point of it becoming a show-stopper, I always felt that the focusing was indeed deliberate. That said, I don’t recall ever missing an important shot because of it. But any improvement of course is welcome!

So when I heard a new firmware was coming out that addresses this very issue, I jumped on it and upgraded to version 1.2.1. Fortunately, I happened to have a Wedding booked the very next weekend so it was a perfect opportunity to test the new firmware out.

Let me just say that I immediately noticed a difference at the Wedding reception. Focusing with the AF assist beam on the 600EX-RT was extremely responsive. Definitely much better than before. This despite the fact that I was not one of those who felt unhappy about the previous performance. So that’s saying something!

I highly recommend this firmware update! 🙂

Here are a few photos from the Wedding Reception.

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