A product of perfection. Beats all the other lences in the range provided by NIKON or CANON.

During Photokina in 2012, Sigma officially announced a re-structuring of their entire lens lineup, declaring that all future lenses would each be part of one of three new product lines: "Contemporary" for affordable consumer lenses, "Sport" for fast and weather-sealed telephoto lenses, or "Art" for...

Constant F1.8 aperture throughout zoom range; Excellent build quality throughout the lens' construction; Large focus and zoom rings are perfectly dampened and easy to find and grasp; Capable of shallow-depth of field wide angle portraits; The only fast and wide angle solution for Pentax's many...

Not weather-sealed despite excellent build quality and both internal zoom and focusing; Dreadful autofocus accuracy when using PDAF (looking through viewfinder; Bokeh can be jarring with highlights; producing "frog-egg" or "donut" ring bokeh; Stark color; temperature; and contrast shift from wide...

The best lens out of my collection. there are only two lenses I take out, 24 - 70mm F2.8 and now this Sigma 18-35mm F 1.8. This also works perfectly with my BMCC. Talk about sharpness. X) Very satisfied with this purchase.

Worth the money, lens is good

Everything is Good

Unlock the full potential of your camera. This lens is as sharp or sharper than my prime lenses. It has a professional quality build to go along with the unmatched sharpness. If you want to get serious about your photos then this lens covers you from 18-35mm (27-53mm).

Great low light lens. Photo was taken with a Nikon D7100

I have no hesitation in joining the chorus of praises for this lens as far as pure optics and ground breaking parameters. If you want to replace 2-3 prime lenses and can adjust to the size and weight, this is lens can do the job, but for me, the limited range and lack of stabilization made it a...

This is a really fantastic lens. If I owned it, I'm certain that it would get a ton of use. I could absolutely envision it as being my "walking around" lens that is attached to my camera most of the time.

I bought this lens for my A77 and was very disappointed 'cause the AF was very unreliable, OK for people, but horrible for landscape. Tried to fix it with the Sigma docking station, but that only works if you have a clear front- or back-focus on the lens and you don't have the possibility to correct...

fast/bright lens; very sharp; great built quality; nice bokeh AF on mirror-less cameras (with LA EA3 on the A6300; BUT only in AF-C mode) is very reliable; even in dim light (with the iris open

Slow focus (but for an 18-35mm f1.8 which i do not intend to use for sports; it's OK); CA (but as I shoot raw; no problem in post processing); weight (again; it's an f1.8 lens; it simply can't be that lightweight) Focusing on SLR (those with that clapping mirror) is inaccurate; not correctable with...

After purchasing a Camera we need a good lens for our video and pictures and if you are a photographer then canon 70-200 better then 18-35 but if you want a budget lens then buy it. Sigma 18-35 With f/1.8 Aperture Make This Thing awesome. * 1.