D4 Reikan Focal Results - Apature aperture test. Can anyone compare

Started Aug 15, 2012 | Discussions thread
Leonard Shepherd
Leonard Shepherd Forum Pro • Posts: 14,864
Re: Yes but

boels069 wrote:

They are reliable and repeatable, even when shot outside the ballpark of Nikon, Canon, etc.

So is the amount of extra fuel used if you run your central heating in the middle of winter with all the windows and doors open.

That raises the question whether a brand's specs are up to real-life situations.

I have used Nikon AF for 13 years and found when I get poor focus the target was one of the 6 types Nikon mention or, or the subject was moving too fast for AF to keep pace.

As light level, maximum lens aperture, image magnification, subject contrast, focal length and subject type influence how well (or not) AF works it is not possible to say precisely which targets will produce poor results when.

One thing I have found testing my D800 where my D3s AF is not good is the D800 AF is much better

 Leonard Shepherd's gear list:Leonard Shepherd's gear list
Nikon D810 Nikon D7200 Nikon AF-S DX Nikkor 18-200mm f/3.5-5.6G IF-ED VR Nikon AF-S Nikkor 16-35mm F4G ED VR Nikon AF-S Micro-Nikkor 60mm f/2.8G ED +17 more
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