Patent: Sigma 24-70mm f/2.8 DG OS HSM Art

[danielm]

Thanks on behalf of all the lazy people, MSP.

Still, no mm given on the optical elements. Was hoping for a 77mm front element, though I'm not sure that's possible for a 24-70. It's a disincentive to get the 24-70 II from Canon, since all of my ND filters are 77mm.

 

[TeT]

If Sigma releases a 24-70 f/2.8 OS Art series lens along with the much hyped 85mm f/1.4 Art in 2016, there will be a lot of happy photographers.

Alot of happy Nikon photographers... If ever there was a ripe time for Sigma to get around AF problems (Canon), this is it..

 

[jonsjons]

If this isn't too expensive I'll likely be trading in my tamron 24-70. It's a decent lens (though I went through two awful samples to find a good one), but the most exciting thing for me is that the Sigma should allow me to have Eye AF on my A7R II via Sigmas new mc-11 adapter.

 

[cellomaster27]

now this is exciting! I bugged them on instagram and facebook about their sub-par 24-70mm 2.8 lens. I'm really excited about this lens! please make it happen sigma!!

 

[Maximilian]

Working example 1... 7

Wizardly, thanks for sorting that out for us.

Some quite interesting lens designs.
Let's see which one will make it to a final product.

 

[Maximilian]

Will the last vendor to deliver a 24-70/2.8 with image stablization please stand up?

It all depends on what Canon would deliver:
I'd always prefer that stellar IQ of the 24-70 L MkII over a much bigger and heavier L IS with the IQ quality of the Tamron.
But if Canon could make it equal or even better by e.g. throwing a BR element and some other tricks in the design... then "heaven" save us from the price

 

[ewg963]

2.8?? IS?? Hmmmmmmmm I'll bite if the image quality is up to par!!! Maybe.... I'll see how it reviews. I've been waiting on Canon to produce this for years...

 

[Wizardly]

Thanks on behalf of all the lazy people, MSP.

Still, no mm given on the optical elements. Was hoping for a 77mm front element, though I'm not sure that's possible for a 24-70. It's a disincentive to get the 24-70 II from Canon, since all of my ND filters are 77mm.

I'm afraid you have to not be lazy to determine this. For each surface the radius of curvature is given and the distance to the next surface along the image axis is stated. It looks like elements 1 and 2 share a common surface, so surface 2 and 3 for element 2 likely define the front element size since they are biconvex with radii that will converge: r2 = 68.064 mm, r3 = -434.277, separated by 8.208 mm for example 1 (the APS-C superzoom).

 

[Schwingi]

Finally, I'm exciting how it will compete against the rest of 28-70/2.8 lenses. Especially Tamron...

 

[picturefan]

Being happy with a new 24-70 lens, I hope Sigma will be competitive to Canon or Tammy, since the have reliable weathersealing build in their lenses. This is the main reason I´ll never buy ART lenses, as I often use my lenses outside, also in bad weather conditions.
So please Sigma, make your new series a bit more pro style = better usable for outdoor people.
What do others think? Aren´t there more photogs out there waiting for weather sealed Sigma lenses?

 

[Peer]

I kind of always liked underdog Sigma (got two of their lenses), but this lens feels a bit like 'too little too late' to me.

-- peer