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by E.J. Peiker on Tue Feb 21, 2017 6:53 am
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Four new lenses, three of which are in the very excellent Art line:
14mm f/1.8  - super fast for a lens this wide
135mm f/1.8 - should be a great portrait lens
24-70mm f/2.8 - stabilized high end 24-70

And one Consumer grade lens:
100-400 f/5-6.3
 

by Markus Jais on Tue Feb 21, 2017 7:02 am
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the description of the 100-400 reads like they are trying to compete with lenses like the EF 4.5-5.6/100-400L IS II. If they can match the optical quality (which remains to be seen) it might be interesting giving the weight.

Do you know if this will do AF with cameras like a 7D @400 with f.6.3? The old 7D does not work with AF beyond to f5.6. Maybe the lens "lies" to the camera and tells it that the f-stop is 5.6 instead of really being 6.3.
 

by Jens Peermann on Tue Feb 21, 2017 9:45 am
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Markus Jais wrote:
Do you know if this will do AF with cameras like a 7D @400 with f.6.3? The old 7D does not work with AF beyond to f5.6. Maybe the lens "lies" to the camera and tells it that the f-stop is 5.6 instead of really being 6.3.


The lens is f/5-6.3, so the camera will always read it as an f/5 lens. No lying needed.

I also find this lens very interesting and hope it can be a replacement for both my Sony 70-300 and the old Canon 400 f/5.6. Since Sigma lenses combined with the MC=11 adapter are supposed to enable all functions on a Sony a6500, it would be great to have a single lens do the job of those two lenses.

Here is a little more info on that lens 
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by E.J. Peiker on Tue Feb 21, 2017 12:45 pm
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Markus Jais wrote:
the description of the 100-400 reads like they are trying to compete with lenses like the EF 4.5-5.6/100-400L IS II. If they can match the optical quality (which remains to be seen) it might be interesting giving the weight.

Do you know if this will do AF with cameras like a 7D @400 with f.6.3? The old 7D does not work with AF beyond to f5.6. Maybe the lens "lies" to the camera and tells it that the f-stop is 5.6 instead of really being 6.3.

No they aren't, this is a contemporary line lens which is a nuch lighter build quality and it's f/6.3 on the long end.  This is a budget option.  if they were trying to compete head to head in the pro line lens arena it would have been a metal build Sport lens.

Sigma f/6.3 lenses have always focused on cameras that have an f/5.6 cut-off as they fool the camera into thinking it's an f/5 lens.
 

by Kerry on Tue Feb 21, 2017 3:49 pm
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I'll be interested to see how the 24-70 plays out; it could be a replacement (for me) for the Nikon 24-70 (non-VR version). I passed on Nikon's upgrade due to size, weight, price, filter size and equivocal reports on any sharpness improvements. I don't see a price projection or weight for this lens; size implies that's it's significantly shorter than either Nikon version (which seems odd). Thread size is 82 mm (boo!), just like the newer Nikon.
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by Coreyhkh on Wed Feb 22, 2017 1:01 pm
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Any word on prices?
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by E.J. Peiker on Wed Feb 22, 2017 4:08 pm
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Coreyhkh wrote:
Any word on prices?


No, not yet.
 

by lelouarn on Wed Feb 22, 2017 4:42 pm
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In the past, how quickly has Sigma been able to actually deliver their new ART lenses after they have been announced ?
Just trying to figure out if we are in for a long wait, or if we can expect to have them in shops in 1-2 months.
 

by Dave Courtenay on Wed Feb 22, 2017 5:13 pm
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Next year i am climbing Mera Peak in the Himalayas at over 21000 feet and hopefully clear skys i will be taking lens for night time photography So will be looking at the 14mm-20mm range, Size/weight and cost will all be taken into account, The Sigma lenses are great but do tend to run heavy

Dave
 

by Wildflower-nut on Wed Feb 22, 2017 9:20 pm
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I'd wait until the reviews come out on coma. The art lenses seem to be a mixed bag in that regard. I settled for the 15-30 f2.8 tamron.
 

by TigTillinghast on Wed Feb 22, 2017 10:46 pm
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lelouarn wrote:
In the past, how quickly has Sigma been able to actually deliver their new ART lenses after they have been announced ?
Just trying to figure out if we are in for a long wait, or if we can expect to have them in shops in 1-2 months.




They haven't been consistent with the distance in time between announcement and availability. I have a suspicion that some of these will be available very soon after announcement and others will be a longer wait. It might even be that one or two of these lenses were not originally going to be announced with the others. It appears that competitors (like Canon and Zeiss) were already reacting to the upcoming announcements with strategic moves of their own. Zeiss lowered prices only on similar lenses, and rumors came out of Canon talking about upcoming lenses that may constitute revised competitors. 

Sigma batches production and retools their lines with some frequency, rotating between lenses they produce every month or two on most lines. That means that if you don't get in on the initial release, supply might be constrained for more months than with other manufacturers. The luckiest are those that live in Japan or the U.S. and who shoot Canon. Sigma sends supply first to those countries in the Canon mount first, then Nikon, then the others. 

Sigma also tends to be an early discounter of their prices. Usually within a year, deals can be seen, but they are only for for 5-10 percent off. 

I've been very impressed with Sigma's introductions over the past couple of years. I suspect I'll wind up with two of these newly announced lenses. 
 

by signgrap on Thu Feb 23, 2017 9:16 am
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Here is some photos and over view of the new lenses.
https://www.dpreview.com/news/4711801152/cp-2017-hands-on-with-sigmas-newest-lenses
Dick Ludwig
 

by Tim Zurowski on Thu Feb 23, 2017 12:33 pm
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It says the 100-400 has a minimum focus distance of 0.16m or 6.3 inches. Could this be correct? Surely that must just be for the lens at 100mm? That would be unbelievable if it focused that close at 400mm.
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by david fletcher on Thu Feb 23, 2017 2:07 pm
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Tim Zurowski wrote:
It says the 100-400 has a minimum focus distance of 0.16m or 6.3 inches. Could this be correct? Surely that must just be for the lens at 100mm? That would be unbelievable if it focused that close at 400mm.



You're bang on the money Tim.  Unbelievable.  Just read as a typo.  more like 1.6m or 5' 3"...   HERE
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by David P on Thu Feb 23, 2017 2:15 pm
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Wildflower-nut wrote:
I'd wait until the reviews come out on coma.  The art lenses seem to be a mixed bag in that regard.   I settled for the 15-30 f2.8 tamron.


The Sigma announcement specifically mentions its use for astrophotography so I am hoping coma is properly corrected.  It could be a wonderful astro lense with that speed.  If I put this on my Fuji Xt2 with a metabones speedbooster I am looking at f 1.4 14mm FF equivalent. Wouldn't that be nice for a starscape.
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by andre paul on Thu Feb 23, 2017 2:32 pm
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David P wrote:
Wildflower-nut wrote:
I'd wait until the reviews come out on coma.  The art lenses seem to be a mixed bag in that regard.   I settled for the 15-30 f2.8 tamron.


The Sigma announcement specifically mentions its use for astrophotography so I am hoping coma is properly corrected.  It could be a wonderful astro lense with that speed.  If I put this on my Fuji Xt2 with a metabones speedbooster I am looking at f 1.4 14mm FF equivalent. Wouldn't that be nice for a starscape.


nowadays all fast wide lenses are very good for astrolandscapes, according to their companies ....    :lol: 

but i'm with you... if it proves to be good i might upgrade my rokinon 14mm ....
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by Neilyb on Mon Feb 27, 2017 3:57 am
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I would hope that a 100-400 sport version comes out with f5.6 at the long end, but I would not swap my 100-400 II ;)
 

by Jens Peermann on Fri Mar 17, 2017 8:32 am
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The 135/1.8 is now priced at $1,400 at B&H. Sigma must be pretty confident about this lens to offer it for $400 more than the legendary Canon EF 135/2.
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