Sigma 35mm F1.4 DG HSM review
Studio Tests (APS-C)
The Sigma 35mm F1.4 DG HSM performs extremely well on APS-C in the studio, matching or surpassing any other lens in its class (although the differences aren't necessarily huge). Sharpness is impressive even at maximum aperture, and just gets better on stopping down. Distortion, CA and vignetting are all very low too.
|Sharpness||Central sharpness is impressively high even at F1.4, and there's relatively little drop-off towards the corners too. Things only improve on stopping down, with truly excellent cross-frame sharpness from F2.8 to F8. Diffraction starts to degrade the image at smaller apertures, but F16 is still eminently usable if you need the extra depth of field.|
|Chromatic Aberration||Lateral chromatic aberration is exceptionally low. There's a tiny amount of red/cyan fringing towards the edge of the frame, but you'll have to look very closely to see it.|
|Vignetting||Vignetting is negligible, as usual for a full frame lens used on APS-C.|
|Distortion||Distortion is extremely low, with just a little barrel-type visible if you look closely.|
We'd never really consider a 35mm F1.4 to be the ideal candidate for close-up work, and the Sigma is no different to any other. Its measured maximum magnification using manual focus is 0.21x, fractionally higher than specified but still pretty typical for its class. Note though that SLRs won't generally autofocus quite this closely.
Image quality is rather impressive. At F1.4 central sharpness is very decent, but a little longitudinal chromatic aberration is visible and the corners are slightly soft. But this all cleans up quickly on stopping down, with the centre of the frame becoming extremely sharp at F2.8. By F5.6 our flat test chart is critically sharp right across the frame, with practically no chromatic aberration and just a little barrel distortion.
Specific image quality issues
As always, our studio tests are backed up by taking hundreds of photographs with the lens across a range of subjects, and examining them in detail. This allows us to confirm our studio observations, and identify any other issues which don't show up in the tests. Here we're looking at issues specific to APS-C users; for a fuller picture, be sure to read the next page too.
Lateral Chromatic Aberration
The 35mm F1.4's CA profile means that colour fringing towards the corners of the frame is slightly more visible on APS-C cameras, compared to full frame. But even so, it's far from problematic, and can be corrected in post-processing where necessary. Nikon SLRs will also compensate for this in their JPEG processing, but other brands won't. The example below shows what to expect - there's a little red/cyan fringing along high contrast edges, but it's not really objectionable even in the extreme corners.
|Canon EOS 650D, F8||100% crop, bottom left corner|
Researchers at NVIDIA have used artificial intelligence to train a system that's capable of turning standard 30fps video into 240fps slow-mo video with minimal loss in quality.
Loupedeck has updated its popular Lightroom editing console with a new '+' version featuring improved build quality, more customization and support for some non-Adobe software.
Apple released a new batch of mobile photography tutorial videos this week, each briefly demonstrating how to perform various camera actions using the flagship iPhone X.
Adobe has announced development of Project Rush, a cross-device video editing application that consolidates the entire video creation workflow, from shooting to social media sharing, in a single application.
Adobe's quarterly financial report was just published, and the news is good. Q2 2018 saw a new quarterly revenue record of $2.20 billion, and 22% growth to $1.55 billion in its Digital Media segment.
Just months after launching its QuartzLine filters for DSLR and mirrorless lenses, PolarPro has launched a buyback program that will give you credit towards a PolarPro filter for trading in an old one - even if it isn't theirs.
Sigma has announced that five of its Sony E-Mount Art-series primes, announced earlier this year, are now shipping.
Adobe has announced a raft of updates across its suite of Creative Cloud apps, including Lightroom CC and Lightroom Classic CC.
The FUJINON GF 45mm F2.8 R WR is a 36mm equivalent fast prime for Fujifilm's GFX 50S. We've been shooting with one for a few days, and we're impressed. Check out our sample gallery to judge for yourself.
Video editing software package Video Pro X has received what is described as its biggest update yet to mark ten years since Magix Video Pro was launched.
Back in 2010, Canon announced that it was developing the world's largest CMOS sensor, measuring about 40 times larger than full frame. The company has just updated its website with more details.
Samyang has launched its latest lens, the Samyang AF 85mm F1.4 EF. This telephoto prime is a direct competitor to Canon's $1,600 alternative—and considering it's expected to retail for half the price, it looks like quite the bargain.
Scanning film takes forever and photographing negatives is a pain. The Pixl-latr aims to provide a simple solution.
Google has published an 18-page study fully detailing its synthetic depth-of-field technology that makes its single-camera Portrait Mode possible. The in-depth paper shows a degree of openness and academic mindset unusual for the industry.
Rugged, waterproof compact cameras are tough enough to survive even the most action-packed vacation, but they're not the only choice for capturing those great memories. Photographer Josh Root takes us through the options.
Kodak has restarted production of one of its most famous film emulsions - Ektachrome. Popular Science editor Stan Horaczek recently go to take a look inside.
The Tamron 28-75mm F2.8 Di III RXD is an affordable F2.8 standard zoom for full frame Sony E-mount cameras. What's it like, what are the trade-offs, and what are the alternatives? Chris and Jordan take a closer look...
We've updated our Best Drones buying guide and there's a new winner. Find out which drone was our favorite and learn more about all current models in our updated guide.
A teardown of a Nikon D850 has provided proof that the camera's sensor is made by Sony Semiconductor. The chip's design and performance already strongly supported this, but the confirmation also gives a hint about how the industry works.
Leica Camera has announced a new compact camera that features a 24-360mm F3.3-6.4 zoom lens and a 20MP 1” MOS sensor. Essentially a re-badged Panasonic Lumix ZS/TZ200, the Leica C-Lux will save Raw and JPEG files, will offer 4K video and has a viewfinder with a 2.33 million-dot resolution.
Leica has launched a limited edition M10 with a contoured handgrip designed by luxury car manufacturer Zagato. And, to celebrate the opening of a new part of the company's Wetzlar factory, a pair of Leica-made watches are due this autumn.
The new Mijia gimbal provides 3-axis stabilization and can charge the battery of the attached device.
YouTuber George Tomlin explains the concept of sub-framing and details how you can use it to take not only make the composition more interesting, but also provide context for the scene you're shooting.
British photographer Drew Gardner tells us how his gigapixel image of the queen's birthday parade came together.
YouTube channel Company Man has shared a 12-minute video explaining the history of Kodak and the factors that led to it going from industry leader to bankrupt business.
Neewer, a photo gear brand out of China, has launched a new budget APS-C lens for Fuji X and Sony E mounts. The Fuji X mount lens offering has appeared on Amazon as a new release with a $119.99 price tag, but is currently listed as unavailable.
Two years after launching its first photo filter, Aurora Aperture is back at it again with the Kickstarter launch of its PowerXND Mark II filters.
Nikon has announced the development of the AF-S NIKKOR 500mm F5.6E PF ED VR lens. Thanks to its use of 'phase fresnel' optics, Nikon claims that the lens will be small and light enough to be used handheld.
MIOPS has opened up a Kickstarter campaign for its latest product, the Capture360. This pocket-sized device is a versatile motion control box designed to be as simple or robust as your needs desire.