Nikon designs new Phase Fresnel lenses – including a 1000mm f/8
With new patents being revealed, are we going to see new small and light Nikon PF lenses soon?
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Some patents are never intended for production . Their existence is to block others from bring a product to market. I have no insight into Nikon's plans for their patents.Thom Hogan mentioned Nikon had new PF patents. This was late last year, but not all, in fact relatively few, ever reach production.
If you want it to be light, you may have to hang it from one of those spy balloonsI like to see the light 1000 mm F 8, to be used while I am hiking
It is good sometimes to have some sens of humour In this forum. Thanks for making me laugh!If you want it to be light, you may have to hang it from one of those spy balloons
Mail order from California, but check camera insurance cover extends to sidewinder missiles. Only $12 apparentlyIf you want it to be light, you may have to hang it from one of those spy balloons
Nikon drops new patents all the time.Nikon designs new Phase Fresnel lenses – including a 1000mm f/8
With new patents being revealed, are we going to see new small and light Nikon PF lenses soon?www.digitalcameraworld.com
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Probably be too heavy to hand hold?How about a 600 f5.6 PF + TC.
Or a 500 f4 PF + TC.
The PF element should make it comparatively small and lightProbably be too heavy to hand hold?
Yes, a 600 f5.6 PF with a 107mm window will be shorter than the 2.4kg 800 f6.3 PF (127mm window). So arguably this 600 PF should weigh under 2 kg.How about a 600 f5.6 PF + TC.
Or a 500 f4 PF + TC.
Good info, Fenton. I haven't read the info you cite, but my thoughts are adding the TC to a PF lens as a point of difference that seems to be what Nikon is about these days.Yes, a 600 f5.6 PF with a 107mm window will be shorter than the 2.4kg 800 f6.3 PF (127mm window). So arguably this 600 PF should weigh under 2 kg.
A 500 f4E PF needs a 125mm window, so also shorter and lighter than the 800 PF. A 1000 f8 is also a 125mm window but needs to be longer so heavier.
Read through the earlier threads with links to Nikon interviews etc, cited above. These have covered many of the design trade offs etc.
Nikon has probably examined how to scale down the 800 PF into a 500 f4E PF, or to scale up the 500 f5.6 PF to the 600 f5.6.... in fact there's a link above to the patent for a 600 f5.6 PF