Zoomlens Canon

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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.

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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.

ZoomLens Pokémon

Urban has registered Reflectacles with the FDA, which currently classifies sunglasses and other spectacles as medical devices; this means people don’t have to take them off when requested to do so. Urban notes that wearers tend to remove them at airport security anyway because it’s just easier to follow authority. “It’s sad,” he says, “but that is the reality.”

Zoomlens focal length

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.

A later—and splashier—model called the Ghost, on the other hand, reflects both visible and infrared light, maintaining the wearer’s privacy in flash photos or videos. Urban now also offers clip-on and wraparound versions of the Phantom, as well as the IR-Shield, a pair of frameless goggles with IR-blocking lenses. This is the model Urban wears himself.

The other model, the Phantom, features the same IR lenses but also has a layer of reflective material applied to its frame. These reflect available infrared light back at technologies using infrared for mapping or illumination, distorting the heat signature of the wearer’s face. The Phantom remains innocuous-looking because its frame isn’t obviously reflective. Visible light can’t penetrate its outer infrared-permeable layer to reach the reflective layer underneath, so to human eyes the Phantom looks like an ordinary pair of black-framed sunglasses.

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.

Zoomlens examples

ZoomLens Phone

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.

Reflectacles come with either light or dark IR lenses. They range from $48 to $188, depending on the model, and prescription lenses can also be ordered.

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.

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).

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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!

Zoomlens Nikon

Urban began designing eyewear in 2005, handcrafting custom frames out of wood. After a decade he was ready to move on. “It came down to time, mostly,” he says. He was also getting interested in the idea of making glasses that would confuse surveillance cameras.

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Urban is the creator of Reflectacles, which look like regular sunglasses but are designed to protect the wearer’s identity from prying digital eyes. The glasses address a primary problem of anti-surveillance “wearables”—that they often look odd or unattractive (like these T-shirts that render the wearer invisible to artificial intelligence surveillance technologies) and can themselves draw unwanted attention.

ZoomLens online

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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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Urban’s initial Kickstarter campaign featured two models of sunglasses. The more basic model, the IR-Pair, has lenses that block infrared radiation, making the wearer’s eyes unreadable to infrared cameras and facial recognition technologies that convert infrared data, or heat signatures, into electronic images. (It’s now available in two shades of tortoiseshell as well as in black.)

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.

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Zoomlens Sony

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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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.

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:

He doesn’t view Reflectacles as being some sort of radical protest against government or big tech. “We have already signed the rights to our privacy away,” he says.

It’s not clear how anyone would be able to ban Reflectacles—they’re really just sunglasses, after all. The FDA already requires Category 3 sunglass lenses (the standard dark lenses) to block light with wavelengths smaller than 400 nm, which is about the borderline on the spectrum between visible and ultraviolet light. Reflectacles are doing a similar thing, just on the other side of the line, something that hasn’t been regulated. To do so, there would need to be a definitive distinction made between a traditional (and acceptable) sunglass lens and one that prevents biometric data from being collected.

These days, many of us are more careful than we used to be about protecting our online privacy: refusing to allow tracking cookies, browsing in private mode or with a VPN, locking down our social media accounts (or deleting them altogether). Fewer of us are taking steps to counter how we are surveilled in real life, but Scott Urban is one of them. (He asked to be interviewed via email—specifically, via ProtonMail, the email service of choice for the security-focused—rather than by phone or video conferencing, so he couldn’t be recorded.)

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Though the glasses look like regular eyewear IRL, they don’t on camera. For instance, the owner of Urban’s local bar told Urban that his head became a “halo of light” on the bar’s video feeds and asked that he stop wearing them when inside. Urban complied because he’d rather not get into a fight (he’s already been thrown out several times for other misdeeds). However, when asked whether people would be banned if they went in wearing Reflectacles, the owner couldn’t give a definitive answer.

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).

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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.