FTZ adapter firmware update broke autofocus on 18-35mm D?

Started 8 months ago | Questions thread
briantilley
briantilley Veteran Member • Posts: 6,764
Re: FTZ adapter firmware update broke autofocus on 18-35mm D?

Freedolin wrote:

What you have discovered is that the AF-D nomenclature is misleading. The 300/4 D is just as much a D lens as all the other D lenses, and there is more than a dozen D lenses that do have internal AF motors. The relevant categories are AF, AF-I, AF-S, AF-P, not "D or not D".

Well, yes, it's misleading, because it's not the official nomenclature, and at the same time it's not

Technically you're right that the D simply states that the lens communicates distance information to the camera. This is, however, true for any AF-I, AF-S or AF-P lens, so in short for any Nikkor with a built-in AF motor (as has been already mentioned in the discussion). The fact that only a few AF-I and AF-S lenses exist with the D in their official name is simply because Nikon stopped using the D designation shortly after the few AF-I and the first AF-S lenses were introduced.

Saying that Nikon "stopped using" the D designation is inaccurate.  It is still in use for the 24mm f/3.5D, 45mm f/2.8D and 85mm f/2.8D Perspective Control Nikkors, all of which communicate distance information and have an aperture ring.

What actually happened is that when Nikon began to remove the aperture ring from lenses they replaced the D designation with G.

But even though it's not an 'official' abbreviation (but used by Nikon itself), for anyone shooting or familiar with older generation Nikkor lenses, 'AF-D' describes a screw-driven lens that provides distance information.

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