Canon RF 14-35mm F4 L IS USM – Assessment 2021


The Canon RF 14-35mm F4 L IS USM ($1,699) is an exceptionally gentle zoom lens, particularly when you think about that it is constructed for full-frame sensor cameras and allows ultra-wide angles of view . It isn’t a stunning design alternative; Lots of Canon’s RF lenses make portability a precedence. The 14-35 F4 has extra optical compromise than you’d count on from an L collection lens, however you’ll be able to forgive these flaws due to how compact it’s. We nonetheless suggest the RF 15-35mm F2.8 L IS USM ($2,399) for extra crucial and technical duties, however the RF 14-35mm is best for these trying to pack gentle.

a zoom you will take with you

Extremely-wide lenses are helpful instruments for capturing vast landscapes or exploring the tight areas of the city world, however they don’t seem to be at all times the best to hold. Canon takes a web page from rival Nikon’s playbook right here and gives an ultra-wide zoom you will wish to take with you. The RF 14-35mm measures 3.9 by 3.3 inches (HD) and weighs only one.2 kilos, not too removed from the Nikkor Z 14-30mm F4 S (3.4 x 3.5 inches and 1.1 kilos) for the Nikon Z system.

The RF 14-35mm F4 takes up much less house in your bag than different vast zooms for Canon’s EOS R system; The 15-35mm F2.8 measures 5.0 by 3.5 inches and weighs 1.9 kilos. Main third-party lens makers have not moved on to assist the system but, so that you’re restricted to Canon’s lenses till you attain the EF-EOS R adapter. We’ve not reviewed the Tokina ATX-i 17-35mm F4 ($599) for Canon SLR, nevertheless it’s value contemplating in case you’re on a price range.

Canon RF 14-35mm F4 L IS USM (Top View)

The RF 14-35mm is a part of Canon’s L collection, the designation for its highest-class lenses. Like different L lenses, it has mud and splash safety and is appropriate to be used outside, even when the climate is barely inclement. The entrance ingredient advantages from an anti-smudge fluorine coating and is flat sufficient to assist a 77mm threaded filter.

The petal-style lens hood of the Extremely-Huge has a push-button lock. Along with the hood, the lens ships with a pinch-style lens cap, a typical rear cap, and a comfortable drawstring pouch.

Dealing with and Autofocus

The RF 14-35mm consists of three on-barrel management rings and a pair of toggle switches: one swaps focus mode and the opposite turns stabilization on or off. The zoom ring is the most important of the three rings and is closest to the lens mount. It sports activities rubber ridges and is slim, with a diameter barely bigger on the again. The design is tactile discreet and goes a good distance in stopping you from having to faucet the handbook focus ring that sits proper in entrance of it.

Canon RF 14-35mm F4 L IS USM (Profile View)

Autofocus is quiet and quick, whereas handbook focus habits is nice. Vloggers and snapshooters can be glad with the digital camera drive to focus, however for extra critical video work, handbook focus continues to be preferable. RF 14-35mm helps each linear and non-linear focus response; The main target management path can be reversible. Focus respiration is properly managed and there’s no obvious change in angle when setting focus. It is a sturdy alternative for video, with both the EOS R mirrorless digital camera or Canon’s RF-mount EOS C70 Cinema Digital camera.

You’ll be able to set the operate of the third management ring that sits on the entrance of the barrel through the digital camera menu. I discover it helpful for direct EV changes, however your mileage could differ. The ring clicks while you flip it on, which is useful for making discrete changes to settings, however this habits may be distracting in case you’re recording in-camera audio. Canon can de-click the ring for an affordable $79.99 charge. That is one space the place Canon may enhance, though many lens producers, together with rival Sony, embody a toggle to click on or de-click the management rings on the barrels of some lenses.

Canon RF 14-35mm F4 L IS USM : Sample image (macro image of a yellow flower)

EOS R5, 35mm, f/4, 1/80-second, ISO 800

Like most wide-angle zooms, the RF 14-35mm focuses as shut as about 7.9 inches from the digital camera’s sensor. At vast angles, it might probably draw small topics with a big swath of background, and at 35mm, it delivers a 1:2.6 life-size copy. It isn’t far behind the devoted $499 RF 35mm F1.8 Macro IS STM (1:2).

The 14-35mm additionally consists of optical stabilization, efficient as much as 5.5 stops when utilizing a digital camera with a set sensor, such because the first-generation EOS R and entry-level EOS RP, or 7 stops while you pair it with a digital camera. 5-axis IBIS sensors, akin to EOS R3, R5, and R6. I examined the lens with the EOS R5 and loved blur-free handheld exposures of as much as 1.6 seconds whereas specializing in topics a number of ft away. Stabilization is not as efficient at shut vary, nevertheless, so I used to be restricted to a shutter pace of 1/4-second when focusing as a lot as attainable.

RF 14-35mm L In Lab

I paired the RF 14-35mm with a 45MP Canon EOS R5 and Imatest software program to check its optical efficiency. At 14mm and f/4, it exhibits its weakest lab outcomes; It is wonderful close to the middle of the body (4,200 strains), however softens towards the sides. Limiting the aperture to f/5.6, f/8, or f/11 (settings which can be higher for conventional panorama work anyway) sharpens the outcome within the heart (4,500 strains) and nets extra element on the edges. Is. Photos shot at f/16 and f/22 aren’t as crisp, a results of diffraction, an impact that causes gentle to scatter because it passes by means of a a lot smaller aperture.

Canon RF 14-35mm F4 L IS USM : Sample Image (Landscape with Barn)

EOS R5, 27mm, f/8, 1/80-second, ISO 1000

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When the lens is ready at an extended focal size, sharpness from heart to edge is extra constant. We examined it at 25mm and 35mm. It produced wonderful outcomes at f/4 (4,100 strains), in addition to stopping all the way down to f/5.6 and f/8 (4,300 strains).

14mm.  RAW without correction compared to out-of-camera JPGs showing distortion and vignettes

Uncorrected Uncooked (left) exhibits a wider view than JPG (proper), however attracts scenes with noticeable barrel distortion and a heavy vignette

The 14-35mm’s struggles at 14mm are tied to its heavy barrel distortion and the optical corrections wanted to compensate for optics that do not cowl the complete full-frame sensor—the corners are black. In case you’re utilizing your digital camera for JPG seize or video, you will not see this downside as a result of the picture processing engine applies distortion and vignette corrections mechanically. These enhancements include a value – the viewing angle is a bit tighter after the correction. It is easy to see the distinction between RAW and JPG seize on the identical publicity within the comparability above.

Canon RF 14-35mm F4 L IS USM : Sample Image (Cityscape with Storefront)

EOS R5, 14mm, f/4, 1/60-second, ISO 160

Uncooked photographers are in additional pickle. In case you use Adobe Lightroom Traditional for processing, you could have entry to a custom-made correction profile. You’ll be able to set it to use mechanically while you import photographs into your catalog, or click on it on and off—it is fully efficient, straightening curved strains and smoothing out vignettes. . However these fixes aren’t as straightforward in case your software program would not provide a restore profile. Lightroom’s largest rival, for instance, the Seize One Professional, has been sluggish so as to add profiles for Canon RF lenses. At press time, that software program solely offers profiles for Canon’s first batch of RF lenses from 2018.

Huge lenses are properly suited to panorama work and getting a pointy multi-point sunstar is a desired search for the type. The RF 14-35mm does a nice job delivering that impact at its smallest aperture, netting an 18-point sunburst with crisply outlined edges at f/16 and f/22.

Canon RF 14-35mm F4 L IS USM : Sample Image (Sun star behind leaves)

EOS R5, 35mm, f/22, 1/80-second, ISO 400

At vast apertures, you’ll be able to simply blur the background, particularly when working nearer and towards the longer finish of the zoom vary. Defocused highlights are principally rounded, whereas the sides of the body present a cat’s-eye lightening impact at f/4. When set to settings f/5.6 and smaller, the spherical aperture blades draw them as circles.

Reforms will not be clear sufficient

Canon was profitable in making the RF 14-35mm F4 L IS USM engaging to photographers preferring to have a lighter equipment. It is about half the load as different vast zooms for the system, is the RF 15-35mm f2.8L USM, and nonetheless consists of optical stabilization. This can be a stretch for photographers who’ve purchased into the system with the reasonably priced EOS RP, nevertheless it’s in any other case match for the digital camera.

Canon RF 14-35mm F4 L IS USM : Sample Image (Road and Power Lines)

EOS R5, 14mm, f/4, 1/320-second, ISO 100

If you cannot handle the $1,699 price ticket, take the $299 RF 16mm F2.8 STM as an possibility—it is not constructed to L collection requirements, however the associated fee is tough to complain about. We might like to see Canon launch a extra reasonably priced RF zoom to cowl ultra-wide angles.

Canon RF 14-35mm f4 L is USM on EOS R5 (three-quarters view)

For photographers much less delicate to the worth, the RF 14-35mm lives as much as the bonafides of its L collection when it comes to its match and end. The lens is each bit as properly constructed because the RF 15-35mm F2.8. Nonetheless, we’re ranking the RF 14-35mm barely lower than that ultra-wide, as a result of photographs taken with this lens on the vast finish want correction in lots of respects—we’ll want optical corrections once they’re invisible. I do not thoughts, however it isn’t the case right here. Nonetheless, the lens represents a good compromise for touring shutterbugs preferring to take uncooked pictures (and do not thoughts the additional work) or who primarily shoot JPGs and video.


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