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Nikon D5 Autofocus on Lens Align Target at f/1.4 and f/4

Get Nikon D5 at B&H Photo.

When working with a DSLR, the one thing I MUST have is the Zacuto Z-Finder Pro 3.0x, $125 OFF through 21 April. See Reader Comment: Zacuto Loupe: “amazed by the result” and my review of the Zacuto Z-Finder.

Surely a mirrorless camera outperforms a DSLR for consistent autofocus? Hmm...

After the disappointing focus results with the Sony A7R II + 85mm f/1.4 GM, I wondered how the Nikon D5 + Nikon AF-S 85mm f/1.4G might fare.

Nikon D5 + 85/1.4G Autofocus Accuracy, Lens Align Target

Includes results at both f/1.4 and f/4.

A Sigma 85mm f/1.4 DG HSM Art is badly needed given the modest optical performance of the Nikon 85mm f/1.4G at f/1.4, but that is not the issue in question here.

The real issue is precision (tightly clustered consistency) since with AF Fine Focus Adjust, a highly precise performance, even if off slightly, can be adjusted so that the results are highly accurate in a tight grouping (minimal shot-to-shot variance, precise). Put another way, a tight cluster (precision) not in the bullseye (inaccurate) can be remain a tight cluster and be recentered to hit the bullseye (precision + accuracy).

Target for this test was the Michael Tapes Lens Align target.

f4 @ 1/5 sec, ISO 100; 2016-04-20 12:26:03
NIKON D5 + lens

[low-res image for bot]
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