Sigma recently released an APS-C lens that rivals nearly all other zoom lenses I’ve seen in its range, the Sigma 18–35mm f/1.8 DC HSM Art. I haven’t tried it myself but I’m dying to try it on my Canon EOS 7D to see how it performs given the rave reviews.

Nikoncamera lens zoom

Internal focusing and zoom means the lens doesn’t move in-and-out when you zoom or focus and the front element won’t rotate at all. This is ideal in that it’s more robust, won’t trap sand/dust/dirt and a filter or matt-box attached to the lens won’t rotate on you unexpectedly.

The 9 rounded aperture blades appear to create pleasing and smooth areas in the out-of-focus areas we lovingly call bokeh. Here’s a video testing it out from f/1.8 to f/16 in a number of conditions:

Most high-end constant aperture lenses are usually expensive and max out at f/2.8 or f/4. To have one that’s relatively affordable and has a constant max aperture of f/1.8 is literally unheard of. The suggested retail is $1160 but the promotional price is $800. At that price, it’s groundbreaking to say the least and it’s a game changer for those without a full-frame sensor camera.

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UPDATE May 2016: Sigma now offers a telephoto zoom version of the Art series, the Sigma 50–100mm f/1.8 DC HSM Art ($1099). Get both and you’ve effectively got a prime lens for every focal length in the 27 to 52mm and 75 to 150mm range (based on Nikon 1.5x crop factor).

Telephotolens

One might think such a lens would be quite soft but early reviews attest to its sharpness and the lens measuring scientists at DxOMark have proof in the numbers. This is a real winner for Sigma and it’s earned my respect for what they can produce.

Opti-Coat enhances the mirror effect, glossiness, color depth and clarity of the paint. With proper maintenance, the finish will shine for many years to come.

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Opti-Coat is a permanent coating that will not wash away, or break down over time. Opti-Coat is more than 100 times thicker than the typical wax coating. It protects the surface for years, not months.

Canon telephotolensfor wildlife

The other obvious negative is it’s size and weight which are inevitable given the specs. It comes in at a hefty 1.78 lb (811g). The zoom range is a bit limiting (28.8 to 56mm equivalent) but it could still easily replace a couple primes you’d otherwise buy and have to carry around and switch out on-the-go.

What it does not have is optical stabilization (OS). This is a little less important at wide angles and fast apertures but it would have been an amazing edition. That said, it would probably push the price above $1000 so it may have been a wise choice by Sigma to keep it priced for the general market. I would suspect a second generation of this lens may have stabilization.

Resisting to chemical etching, harder than factory clear coatings to reduce swirl marks and scratches. It provides resists the damaging effects of bugs, bird droppings, tree sap, oxidization and UV rays fading.

This comparison table by DxOMark says it all given it’s now the best performing APS-C zoom in their entire database of lenses. It sits above the Canon EF 24–70mm f/2.8L II USM and even my beloved all-white Canon EF 70–200mm f/2.8L IS II USM! That’s amazing.

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The Canon mount version is available now but on back order (understandably) and other mounts are coming soon it seems. Below are links to the lens pages on B&H for each of the available mounts. You can be notified when it will be available.

Opti-Coat ceramic coatings are backed by Optimum Polymer Technologies, Inc. Opti-Coat Pro Warranty is valid for Five (5) years, and Opti-Coat Pro Plus Warranty is valid for Seven (7) years.

Myself, I’d order one now but I’m still thinking of going full-frame in a year or two so I’m hesitating. It’s so damn tempting however. If I had to repurchase my gear tomorrow, a Canon EOS 70D and this lens would be a killer combination for just $2000. Perhaps I’ll get this and hold off on a full-frame for a while!

Let me know what you think of the lens or if you plan to buy one. Find it online at B&H (they ship to Canada affordably but check PhotoPrice.ca).

What’s remarkable about this lens is its extremely large and constant maximum aperture. That small f/1.8 value is fantastic as it means a lot of light gets into the lens AND it continues to do so even as you zoom in.

Camera Zoom Lensfor Mobile

Opti-Coat increases the anti-water spotting, it repels dirt, brake dust, and tar to stick to the surface, and make it comes off with ease. Keeping the vehicle cleaner for longer, and wash less frequent.

A picture taken with a 35mm lens on a camera with a full frame sensor, shot at f/2.8 and ISO 200, provides — in terms of depth of field and bokeh — a similar image as shot with the Sigma 18–35mm Art on a APS-C sensor camera with the same shutter speed, f/1.8 and ISO 100. Due to the difference in ISO is also full-frame relationship between cameras, and APS-C cameras wiped away a large part of the difference in signal-to-noise.

The long-lasting durability of Opti-Coat ceramic coating makes it highly cost effective. As opposed to applying thin coats of wax or sealant several times a year.

The key thing to understand with this lens is that it’s not for full-frame cameras. The most popular and comparable option for full-frame shooters is a 24–70mm f/2.8 zoom lens. Since full-frame cameras have inherently shallower depth of field and better performance at higher ISO, having a f/1.8 constant aperture zoom creates a true equivalent for those of us with cropped-sensor cameras. As noted in some early reviews, full-frame shooters still benefit from a slightly broader focal length zoom range with 24–70mm vs. Sigma’s 28.8–56mm equivalent, but this really levels the playing field and does so affordably. I say affordable given Canon’s version of the 24–70mm f/2.8 is a whopping $2300 while Nikon’s “only” at $1900.