Articles tagged "autofocus"

DPReview TV: Best budget lenses for Canon APS-C DSLRs

New lenses are getting better than ever, but sometimes it feels like prices are rising to stratospheric levels. Chris and Jordan share their picks for the best budget lenses for Canon APS-C DSLRs.

DPReview TV: With new firmware, Nikon Z6 and Z7 autofocus gets closer to 3D AF tracking

Nikon's firmware 3.0 update for the Z6 and Z7 includes AF improvements designed to replicate its class-leading 3D-tracking mode for DSLRs. We put it to the test to see how well it works.

Techart releases TZC-01, an EF-to-Z adapter that offers full autofocus, image stabilization support

The TZC-01 will work with over 60 EF-mount lenses from Canon, Sigma, Tamron, Tokina and Zeiss.

Hasselblad claims its new XCD 45mm F4 is world’s smallest, lightest AF medium format lens

A smaller and lighter version of an existing lens joins the XCD system bringing with it a smaller price and a smaller maximum aperture too.

DPReview TV: This is how you set up Sony's 'Real-Time' autofocus tracking

Sony's 'Real-Time' autofocus promises to track almost anything you throw at it, but it's not enabled by default. The words 'Real-Time' don't even appear in the camera's menu. In this video, Chris shows us how to set up this very useful feature.

Canon files patent application for eye-controlled AF system for mirrorless cameras

The system bears a striking resemblance to the Eye-Control autofocus system found in Canon's 1992 EOS 5 film camera.

Nikon video teases upcoming eye-detection AF firmware update for Z6 and Z7, due out May 16

The 15 second video teases upcoming support for eye-detection autofocus with Nikon's Z6 and Z7 cameras.

Ricoh GR III gets firmware update to improve low-light focusing, add Wi-Fi Image Sync option

Firmware version 1.10 for the GR III is said to improve low-light autofocus performance and adds a new Wi-Fi option for transferring images via Image Sync.

Fujifilm releases 3.0 firmware for X-T3, brings improved AF for both stills and video

Fujifilm's latest firmware update for its X-T3 camera includes an improved AF algorithm for enhanced face detection, better subject tracking and more.

Sony's 'Real-time tracking' is a big leap forward for autofocus

Sony's new 'Real-time tracking' AF system promises much improved subject tracking performance, using machine-learning, pattern recognition and much more. Here's what's changed – and how it actually performs.

Canon EOS R review
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Canon's EOS R, the company's first full-frame mirrorless camera, impresses us with its image quality and color rendition. But it also comes with quirky ergonomics, uninspiring video features and a number of other shortcomings. Read our full review to see how the EOS R stacks up in today's full-frame mirrorless market.

Video: How phase detection autofocus works

YouTuber ZY Productions has a video wherein he provides a succinct summary of how phase detection autofocus systems work, their benefits and their shortcomings.

Video: Tamron 28-75mm F2.8 FE face and eye-detect autofocus test

Photographer David Oastler got his hands on an early copy of the Tamron 28-75mm F2.8 Sony FE lens, and while he couldn't take pictures with it, he did get to test its focusing capabilities. The great news: this thing focuses just as fast a Sony native lens.

Samyang unveils AF 14mm F2.8 EF, its first autofocus lens for Canon

Meet Samyang's first autofocus lens for Canon EF-Mount: the AF 14mm F2.8 EF. At just 700 Euro (~$840 USD), this new third-party offering gives Canon shooters a much more affordable option to Canon's own $2,100 14mm F2.8L II IS USM.

Nikon D850 in-depth autofocus test

We've spent some serious time assessing the autofocus system on the D850; from portraits to bicyclists, we've found out just how precise this camera's focus is, and how well its subject tracking will keep up. Check it out for yourself in our updated First Impressions review.

Samyang unveils 35mm F1.4 autofocus lens for Sony full-frame mirrorless

Samyang has announced its fourth autofocus prime lens for Sony full-frame mirrorless cameras: meet the long-rumored and much-anticipated Samyang AF 35mm F1.4 FE.

Not quite as good? Nikon D850 versus Nikon D5 subject tracking

Photographer Matt Granger recently pitted the Nikon D850 up against the flagship D5 in a subject tracking battle royal, proclaiming the D5 comes out on top. Is he right? Here's our take

Sony packed serious phase detect AF into these new 4K palm-style camcorders

Sony just debuted three palm-style 4K camcorders that steal a bit of speedy phase detect autofocus technology from the company's RX10 IV. In fact, they kind of improve on it.

Video: Sony a9 falls short with  Canon 300mm and 400mm lenses attached

If you're thinking of using Canon's sports glass on the Sony a9, think again. The ultra-fast camera slows way down when you attach off-brand glass.

A visual history of Canon autofocus and how it works today

This short animated video produced by Canon looks back on the dawn of autofocus, and also explains how modern systems work.

Looking back: Canon's eye-controlled focus

In this week's Throwback Thursday, Dale jumps into the wayback machine to look at Canon's eye-controlled focus, a promising technology introduced during the film era, but which never quite made the jump to digital. Read more

Updated: A look at the Panasonic DC-GH5's autofocus system

While the Panasonic DC-GH5's impressive video specs tend to steal the show, a ton of updates under the hood have made it a better sports shooter than you might expect. Check out how its updated autofocus system fares in our in-depth analysis. Read more

Maximum sharpness: Nikon's automated AF Fine Tune explained

Among the features introduced in Nikon's new D5 and D500 DSLRs, we're very excited by automated AF Fine Tune. This feature allows users to quickly fine-tune their specific camera bodies and lenses, maximising the chanes of a sharp shot and avoiding the lengthy process of trial-and-error tuning that was previously necessary. Watch our video and read our in-depth analysis

Sony Alpha 7R II can match or beat DSLR low light AF performance

When the Sony Alpha 7R II was announced, it promised a lot of game-changing features, but its low light AF capability was an unknown. We've already seen some of the incredible continuous AF abilities of the a7R II, including pinpoint eye AF for even moving subjects, but a lot of pros may be wondering: 'if I ditch my DSLR for some of the advanced AF features the a7R II offers, will I be sacrificing low-light AF performance?' Find out in our video

Analysis: Sony a7R II and RX100 IV autofocus systems

Sony recently shook things up with the announcement of the 42.4MP, backside-illuminated full-frame a7R II mirrorless camera, alongside stacked 1"-type sensors in the updates to the popular RX100 and RX10 lines. We put their new AF systems to the test in our brief hands-on time with the cameras recently. See videos of the cameras in action

Configuring your 5D Mark III AF for fast action

The Canon EOS 5D Mark III has a very sophisticated and complex AF System. The possible combinations to tweak the AF properties are basically unlimited, so especially for beginners it can be hard to assess which configuration will yield the best results.

Variation Facts and Fallacies
There is no such thing as a 'perfectly' calibrated lens or camera. Sample variation is a fact of life. In this article, Roger Cicala of Lensrentals explains what this means, and what - if anything - you need to worry about.
Busted! The Myth of Open-loop Phase-detection Autofocus
The myth that focus-locking phase-detection autofocus is an open-loop control system is "Busted!" This article provides tests you can use to prove it is not only a closed-loop control system, but that it's fundamentally the same process as continuous-focus and always has been.