Daniel Bliss wrote:
Is it possible to confirm which mount and sensor format these patents are for? I assume all the super-wide zooms are mirrorless and mostly DX, but wondering perhaps about some of the telephotos. However a mirrorless-oriented or Z-mount mirrorless-specific 300mm/4 PF is probably wanted by some people sooner rather than later -- the AF motor on the DSLR one doesn't play all that nicely with Liveview on F-mount bodies when used in continuous autofocus so I assume it wouldn't necessarily be that great with mirrorless either, and the autofocus is noisier than on other high-end F-mount products. Being inclined to stick with F-mount myself on account of not wanting to drop a bomb on trading up to all new gear, I'd be curious about AF-P lenses for F-mount too; it struck me as a bit odd that Nikon never brought out FX versions of the 10-20 DX and 18-55 DX AF-P lenses, let's say AF-P versions of the 18-35 and 24-85, when they introduced that marvelous 70-300 FX zoom a few years ago, and while I use faster lenses for stills, it would be nice to have a set of lightweight AF-P glass for travel and video.
Yes, the image diagonal is mostly stated in the patents so that’s the easiest bit of confirmation of which format. Otherwise you’d have to deduce it from the angle of view for the focal length.
As to F vs Z mount, it’s easy enough on some designs (mostly normals and wides) where back focus distance is less than 46.5mm so it cannot be for F mount.
Some are less than 16mm and that would mean it’s for a FLC since Z mount has the shortest flange back distance already of any ILCs at 16mm.
On telephoto designs it’s more difficult to figure out because the back focus can be longer than 46.5mm and still be for Z mount. Especially if it’s to be TC compatible.
Mar 08, 2021 at 05:58 AM
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