[h0001244]

Good start ! ! ! Though not for FF
hope to see a full frame one soon.

[430707]

The price and quality may not be good.

[viovanda]

if there is 24-70 /1.8 for full frame ,i dont mind to pay $20K

[kenshinkanon]

Wonder can this lens use in 1D4....

[h0001244]

18-35 is for aps-c only..... the image circle is smaller


24-70 F1.8....I wish too, but hope it's not too heavy.....it must be a big one

[viovanda]

if around 86mm filter size.than it id not too big

[since2000photo]

Canon 70200 f4 係f2.8 一半價錢，相差一級
Canon 1740 f4 係 1635 f2.8 一半價錢 相差一級
Canon 2470 f2.8 約 $16000， 做到f2, 約三萬蚊，如果做到f1.8的話，會賣五至七萬左右，因為太小人買，成本太高。

[cbsphoto]

The recent Sigma lens 35mm F1.4 is a good lens, the price is half of Canon counterpart. The quality of 18-35mm F1.8, let see...........

[simson99w]

大光圈就要大口徑, 相信重量接近 1000g

[ck_112]

not very heavy, just 810g.
and its outlook is quite good.

I dun think this lens will be very expensive, i bet it will be around 8k.

and i think if sigma can make this, it just want to test if it has market, if has, it will make one for FF.

http://www.dpreview.com/news/2013/04/18/Sigma-announces-worlds-first-F1-8-constant-aperture-zoom-lens

http://digiphoto.techbang.com/posts/4676-sigma-18-35mm-f18-dc-hsm-published-art-shock-maximum-aperture-zoom-lens-was-born-in-history