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Nikon 24mm f/1.4G autofocus study published!

Just published in DAP is my study of the Nikon AF-S 24mm f/1.4G autofocus performance on the Nikon D3x and D3s. Multiple controlled tests as well as ad-hoc examples are presented.

Combined with the survey results, it’s abundantly clear that something isn’t right with the 24/1.4G. Could a recall be in the offing? I don’t see any explanation but “defective”.

I am more impressed with optical quality of the 24mm f/1.4G than ever, especially at f/1.4, but the autofocus is best described as useless, at least with my sample, because it cannot be relied upon to deliver the performance of which the optics are capable.

Wildly inaccurate focus

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