Newly announced on the main blog, minus price info so far.
I've been thinking hard about getting the new 20mm 1.8 Nikon as a wide angle prime, as the Nikon 24 1.4 is not to justify for me, price wise.
My N17- 35 2.8 is a heavy beast. Ok, the new Sigma may not be that much lighter ... anyway, looking forward to hearing info on the price.
but I do worry about future compatibility with sigma products
My point would be, if I were in your shoes @kenadams: The 20/1.8 is available NOW. Nobody, even not Sigma's CEO knows when the 24 Art for Nikon will hit the shelves. I was waiting since start of October for the 150-600 Sports and a week ago I was told "not before march". I'm a big fan of Sigma's outstanding quality at hard-to-beat-prices but if it comes to delivery date promises, they just suck.
I think I would wait for the Sigma, but it depends on how much you need a wide angle prime. Maybe wait for the reviews and then decide?
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Nikon needs to push their sales. If Sigma could deliver today, a lot of people would run for that new Art lens.
The Sigma 50mm ART is a sweet lens, and I am sure the 24mm will be as well, just not one I need...
The Sigma looks a bit better performancewise but I'm afraid I'd gain nothing spectacular. However, I'm a curious person sometimes. Anyway, it's lightyears away
Oh, dear, tough times to come for Nikon… how do they do that?
Would be interesting how the Nikon lenses of that FL would focus. But I keep in mind, the 24/1.4 from Sigma saves half the bucks I spent on 24/1.4 G, and the same for the 35 and 50 - I think, even if focussing in very dark areas becomes an issue on comparatively old systems like D4 (without s) and D7000 - they blow those counterparts away in each (!) other aspect.
I can honestly say, I never experienced Sigma lenses hunting where Nikkors would just bite the spot.
I understand that a 1.4 aperture lense lets in more light than a 1.8 lense, and I understand that the speed and precision of the auto focus depends on the focusing system in the lense – but otherwise, isn't it the camera that tells the lense where the focus should be?
Incidentally, my Sigma 35mm f/1.4 Art has not shown to have a focusing issue in my experience. And, I have been in some dark spots...
f/8, 5 seconds, ISO 100 Sigma 35mm f/1.4 ....focus was pretty straight forward.
The Nikon has a AF-S Silent Wave Motor
The Sigma a HSM -Hyper-Sonic Motor
No, I have not got any idea what the difference is either
but there does seem to be a difference
I have only hired the the Nikon the AF-S NIKKOR 24mm f/1.4G ED
I can confirm it focuses blisteringly fast in very poor light
@Vipmediastar_JZ: I think I can spot a little bit of chromatic aberation on the man standing outside. Otherwise the images look very good.
However, as Sigma has to reverse-engineer the AF mechanically and electronically as well as the firmware, I see possible sources for malfunction. Either they do copy exactly and face legal problems or they try to find different ways which might have other downsides. I don't see Nikon's AF-system as perfect, so its' possible Sigma has better solutions for all their supported mounts which don't fit into the Nikon design. It wouldn't surprise me if certain cameras behind a Sigma lens do work better or worse than others.
The new Nikon 80-400mm AF-S VR G ED N R
The old Nikon 80-400mm VR
the new one focuses much faster