In Focus this episode, James and Mike argue the pros and cons of firmware. Is it worth updating your camera, when the rewards are new features and better performance but the risks include bricking your body? We discuss horror stories and best practices.

For our Gear Up section, we get to grips with the "dream lens" of Sigma CEO Kazuto Yamaki: the 300-600mm f/4 Sports lens, which is remarkable not just for its image quality but also its incredible price. But how do James and Mike, as Canon and Nikon shooters respectively, feel about missing out on such a great lens?

And in Trouble Shooting, we go over the tips, tricks and techniques to cure camera shake and ensure sharp shots, whether you're shooting with a 600mm monster like the Sigma or you're trying to get blur-free pictures from your everyday photography.

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