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.

This is a classy lens for APS sensor cameras in every way. Build quality is first rate with smooth zoom and focusing action. It is a perfect match for my Canon 70D (or a 7D) Image quality stopped down is razor sharp with virtually no distortion or vignetting.

Excellent build and image quality

One needs to use this lens with care due to the shallow depth of field

Gary Wolstenholme reviews the Sigma 18-35mm f/1.8 DC HSM A standard zoom lens.

Excellent sharpness; Constant f/1.8 aperture; Low falloff for an f/1.8 lens; Good build quality; Reasonably priced

No real issues to report

We are a little late with this review but finally here it is ... our test of the Sigma 18-35mm f/1.8 DC HSM "Art" (Canon mount, Nikon will follow eventually). The lens produced quite some buzz when it was released earlier this year.

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...

When it was announced roughly a year ago, Sigma's 18-35mm f/1.8 DC HSM Art lens was the first of its type with a constant f/1.8 maximum aperture. Designed exclusively for cameras with APS-C sized sensors, it covers the 35mm equivalent of 29-56mm on Canon DSLRs and 27-52mm on other bodies.

Great Lens. Still quite sharp wide open. even better at 2.8. Solid build not too heavy. Has a72mm filter wish it was 77mm. Overall 5 stars

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...

I don't need to re-state what others have already said. This lens is heavy, big, only a 2x zoom, and produces absolutely phenomenal images. I mount it to my A6500 all the time (with the MC-11 adapter), and it never disappoints. Highly recommended.